{"title":"Downstems","description":"\u003ch2 class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eHow to measure a downstem\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eThis is where most people order wrong, so read this first. You need two things:\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eJoint size.\u003c\/strong\u003e Most bongs take an 18.8mm downstem that accepts a 14.5mm bowl , this is the standard 18.8mm \u0026gt; 14.5mm setup. Measure the opening on your bong's joint, or check your bong's product listing. If a 20p coin almost fits the opening, it's 18.8mm; if it's noticeably smaller, you're likely on 14.5mm.\u003ca href=\"https:\/\/www.instagram.com\/p\/DYo3GKsNPOq\/?hl=en\" title=\"jimmy_green_uk instagram\"\u003e See our insta for infographic\u003c\/a\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eLength.\u003c\/strong\u003e Measure from the bottom of the ground glass joint to the tip of the stem. If you're replacing a broken one, measure the old stem the same way. Too long and it'll sit on the base of your bong; too short and it won't reach the water. When in doubt, size down slightly, a stem that clears the water by a touch still works, one jammed against the glass doesn't.\u003c\/p\u003e\n\u003ch2 class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eDiffused or open-ended?\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eOpen-ended stems give a direct, unrestricted pull. Diffused stems break smoke into smaller bubbles through slits at the tip, which cools it and smooths the hit noticeably — for most people it's the single cheapest upgrade you can make to a basic bong. The trade-off: slits can clog with resin faster, so pair one with proper cleaning habits.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eNot sure on sizing? Our joint size guide covers it all 👉 \u003ca href=\"https:\/\/www.abongshop.co.uk\/blogs\/bowls-bangers-and-nails\/bong-joint-sizes-explained-uk-10mm-vs-14-5mm-vs-18-8mm\" title=\"Bong Joint sizes\"\u003eBong Joint Sizes Explained\u003c\/a\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e While you're here, grab 👉 \u003ca href=\"https:\/\/www.abongshop.co.uk\/collections\/bong-cleaning-supplies\" title=\"Bong Cleaning Supplies\"\u003eCleaning supplies\u003c\/a\u003e or a replacement 👉\u003ca href=\"https:\/\/www.abongshop.co.uk\/collections\/bowls\" title=\"Bowls uk\"\u003e Bowl\u003c\/a\u003e\u003c\/p\u003e","products":[{"product_id":"coloured-downstem","title":"Coloured Downpipe","description":"\u003cp\u003eUpgrade your bong with our 5-inch premium borosilicate glass colored downpipe, featuring meticulously crafted slits designed to split the smoke and create bubbles just like a percolator. \u003cbr\u003eIdeal as a high-quality replacement downstem, this piece promises to enhance your smoking experience with its exceptional functionality and vibrant aesthetic.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e5 inch \u003c\/li\u003e\n\u003cli\u003eQuality \u003cspan\u003eborosilicate glass\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFits 18.8mm joint\u0026gt;14.4mm bowl \u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eVarious colours \u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"A Bong Shop","offers":[{"title":"Blue \/ 6inch","offer_id":44459278303481,"sku":"","price":9.99,"currency_code":"GBP","in_stock":false},{"title":"Green \/ 6inch","offer_id":44459278336249,"sku":null,"price":9.99,"currency_code":"GBP","in_stock":false},{"title":"Black \/ 6inch","offer_id":44459278369017,"sku":null,"price":9.99,"currency_code":"GBP","in_stock":true},{"title":"Blue \/ 5inch","offer_id":56744815919482,"sku":null,"price":9.99,"currency_code":"GBP","in_stock":true},{"title":"Green \/ 5inch","offer_id":56744815952250,"sku":null,"price":9.99,"currency_code":"GBP","in_stock":true},{"title":"Black \/ 5inch","offer_id":56744815985018,"sku":null,"price":9.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0638\/4756\/3513\/files\/coloured-downpipe-a-bong-shop-3.jpg?v=1774615765"},{"product_id":"diffuser-downpipe","title":"Diffuser Downpipe","description":"\u003cmeta charset=\"UTF-8\"\u003e\n\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003eThis high quality Borosilicate glass Diffuser Downpipe stands as the ultimate downpipe upgrade for your bong. Why? This innovative downpipe is equipped with diffusers. The slits at the end of each tube not only ensure that individual bubbles are formed in the water, enhancing filtration, but the diffusers also create additional bubbling.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p2\"\u003e \u003c\/p\u003e\n\u003cul class=\"ul1\"\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s2\"\u003e\u003c\/span\u003e\u003cspan class=\"s1\"\u003e5 inch \u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s2\"\u003e\u003c\/span\u003e\u003cspan class=\"s1\"\u003eDiffuser Down pipe \u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s2\"\u003e\u003c\/span\u003e\u003cspan class=\"s1\"\u003eQuality borosilicate glass\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s2\"\u003e\u003c\/span\u003e\u003cspan class=\"s1\"\u003eFits 18.8mm joint\u0026gt;14.4mm bowl \u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"A Bong Shop","offers":[{"title":"3.5","offer_id":57007275737466,"sku":null,"price":4.99,"currency_code":"GBP","in_stock":true},{"title":"4 inch","offer_id":56506235847034,"sku":null,"price":4.99,"currency_code":"GBP","in_stock":true},{"title":"4.5 inch","offer_id":56506229752186,"sku":null,"price":4.99,"currency_code":"GBP","in_stock":true},{"title":"5 inch","offer_id":44471622992121,"sku":null,"price":4.99,"currency_code":"GBP","in_stock":true},{"title":"5.5 inch","offer_id":55882160144762,"sku":null,"price":4.99,"currency_code":"GBP","in_stock":true},{"title":"6 inch","offer_id":55395615768954,"sku":null,"price":4.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0638\/4756\/3513\/files\/diffuser-downpipe-a-bong-shop.png?v=1742849087"},{"product_id":"down-pipe","title":"Coloured Swirl Glass Downstem | Replacement Diffuser Pipe","description":"\u003cp\u003e\u003cspan\u003eBring some colour and personality to your setup with these Striped Glass Downstems. Designed for smooth diffusion and a secure fit, they’re the perfect way to upgrade or replace your bong’s standard downstem. Each one is hand crafted with bold spiral patterns, making your piece stand out while keeping function front and centre.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003cspan\u003eThese downstems don’t just look good the quality coloured borosilicate glass ensures long lasting performance and reliable airflow every session. A simple but essential upgrade for any glass collection.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHigh quality borosilicate glass\u003c\/li\u003e\n\u003cli\u003eHand blown striped swirl patterns\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003efor 14.5mm make bowl or banger\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eA Bong Shop\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"A Bong Shop","offers":[{"title":"5 inch","offer_id":55900632842618,"sku":null,"price":9.99,"currency_code":"GBP","in_stock":false},{"title":"6 inch","offer_id":55900632875386,"sku":null,"price":9.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0638\/4756\/3513\/files\/IMG-5692.png?v=1760504317"},{"product_id":"coloured-swirl-glass-downstem-replacement-diffuser-pipe","title":"Rainbow Swirl Glass Downstem |Replacement Diffuser Pipe","description":"\u003cp\u003eBring colour and smooth diffusion to your favourite bong with the Rainbow Swirl Glass Downstem. Handcrafted with a bold spiral design, this downstem doesn’t just function well , it adds a unique style to your glass setup.\u003c\/p\u003e\n\u003cp\u003eBuilt from durable borosilicate glass, it provides excellent airflow and reliable performance, helping to cool and filter each hit. Compatible with most standard bongs, it’s the perfect replacement or upgrade piece.\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eVibrant rainbow swirl design\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eQuality borosilicate glass\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDiffuser\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eA Bong Shop\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"A Bong Shop","offers":[{"title":"5 inch","offer_id":55900644802938,"sku":null,"price":9.99,"currency_code":"GBP","in_stock":false},{"title":"6 inch","offer_id":55900644835706,"sku":null,"price":9.99,"currency_code":"GBP","in_stock":false},{"title":"5.5 inch","offer_id":55900654829946,"sku":null,"price":9.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0638\/4756\/3513\/files\/IMG-5689.png?v=1760504320"},{"product_id":"amber-swirl-glass-downstem-replacement-diffuser-pipe","title":"Amber Swirl Glass Downstem | Replacement Diffuser Pipe","description":"\u003cp\u003e\u003cspan\u003eUpgrade your glass with this Striped Glass Downstem ,a simple but stylish way to refresh your bong. The bold spiral pattern doesn’t just catch the eye, it also adds a unique, handcrafted touch to your setup.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eMade from durable borosilicate glass, this downstem is built for smooth diffusion and reliable performance. Easy to fit and even easier to love, it’s the perfect mix of function and flair.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eHigh quality borosilicate glass\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSpiral stripe detail\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003eSmooth diffuser\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eBrown\/amber swirl pattern\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eA Bong Shop\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003ePlease note: All products on this site are intended for tobacco or legal dry herb use only.\u003c\/span\u003e\u003c\/p\u003e","brand":"A Bong Shop","offers":[{"title":"5.5 inch","offer_id":55900655649146,"sku":null,"price":9.99,"currency_code":"GBP","in_stock":false},{"title":"6 inch","offer_id":55900655681914,"sku":null,"price":9.99,"currency_code":"GBP","in_stock":false},{"title":"5 inch","offer_id":55900660105594,"sku":null,"price":9.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0638\/4756\/3513\/files\/CDAF8027-E928-47B1-822D-DD847EAD9E0D.png?v=1760504323"},{"product_id":"beaker-bong-with-fixed-downstem-7-inch","title":"Beaker Bong with Fixed Downstem | 7 inch","description":"\u003cp\u003e\u003cspan\u003eThis 7.5 inch beaker style glass water bong from A Bong Shop is a classic, timeless shape. The beaker base provides steady airflow and good water capacity, while the integrated tyre \u003c\/span\u003e\u003cspan\u003estyle percolator breaks smoke into fine bubbles for consistent diffusion and smoother inhales.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eCrafted from durable glass, the build prioritises balance, heat resistance, and everyday practicality. The wide beaker base adds stability, and the clear body allows easy visibility of water level and function. An ice catcher is built into the neck to support additional cooling without affecting airflow or draw resistance.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe experience is familiar, comfortable, and easy to maintain, making it well suited to regular home use. The shape offers a secure grip and stable footing, while the wide mouthpiece helps reduce splash and supports a relaxed smoking posture. This piece is ideal for users who value simplicity, cooling performance, and straightforward cleaning.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e7 inch \u003c\/li\u003e\n\u003cli\u003eBeaker base\u003c\/li\u003e\n\u003cli\u003eFixed downstem\u003c\/li\u003e\n\u003cli\u003eIntegrated tyre style percolator\u003c\/li\u003e\n\u003cli\u003eIce catcher\u003c\/li\u003e\n\u003cli\u003eColoured decals \u003c\/li\u003e\n\u003cli\u003eA Bong Shop Uk \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSpecifications:\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eHeight: 7.5 inches\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eJoint size: 14mm male\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eMaterial: Glass\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eUse: Dry herb\u003c\/span\u003e\u003c\/p\u003e","brand":"A Bong Shop","offers":[{"title":"Black","offer_id":56522721558906,"sku":null,"price":29.99,"currency_code":"GBP","in_stock":true},{"title":"Green","offer_id":56522721591674,"sku":null,"price":29.99,"currency_code":"GBP","in_stock":false},{"title":"Blue","offer_id":56522721624442,"sku":null,"price":29.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0638\/4756\/3513\/files\/IMG-1187_9c704abe-fc32-476c-adfd-fa6b162f40ce.png?v=1769608156"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0638\/4756\/3513\/collections\/88A2D092-E3E5-4F98-A0E3-5670B53DB2D5.jpg?v=1783971735","url":"https:\/\/www.abongshop.co.uk\/collections\/downstems.oembed","provider":"A Bong Shop","version":"1.0","type":"link"}