{"product_id":"tag-28-18mm-matrix-bong-downstem","title":"TAG - 28\/18MM Matrix Bong Downstem","description":"\u003ch2 data-end=\"330\" data-start=\"281\"\u003e\u003cstrong data-end=\"328\" data-start=\"284\"\u003eTAG – 28\/18MM Super Slit Matrix Downstem\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ch3 data-end=\"391\" data-start=\"331\"\u003e\u003cstrong data-end=\"391\" data-start=\"335\"\u003eMatrix Precision. Maximum Airflow. Premium Function.\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-end=\"845\" data-start=\"393\"\u003eThe \u003cstrong data-end=\"439\" data-start=\"397\"\u003eTAG 28\/18MM Super Slit Matrix Downstem\u003c\/strong\u003e is engineered for high-performance diffusion.\u003cbr data-end=\"488\" data-start=\"485\"\u003eFeaturing a matrix grid of fine super slit openings arranged in multiple rows, this design provides exceptional airflow balance with dense bubble stacking and smooth, consistent draws. The larger 28MM male outer joint fits TAG’s wide-joint beakers and straight tubes, while the 18MM female inner joint maintains compatibility with standard 18MM male slides.\u003c\/p\u003e\n\u003chr data-end=\"850\" data-start=\"847\"\u003e\n\u003ch3 data-end=\"874\" data-start=\"852\"\u003e\u003cstrong data-end=\"872\" data-start=\"856\"\u003eKey Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-end=\"1458\" data-start=\"875\"\u003e\n\u003cli data-end=\"1001\" data-start=\"875\"\u003e\n\u003cp data-end=\"1001\" data-start=\"877\"\u003e🧩 \u003cstrong data-end=\"908\" data-start=\"880\"\u003eMatrix Super Slit Design\u003c\/strong\u003e – High-density grid layout multiplies diffusion points for smoother, more refined airflow.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1121\" data-start=\"1002\"\u003e\n\u003cp data-end=\"1121\" data-start=\"1004\"\u003e💨 \u003cstrong data-end=\"1029\" data-start=\"1007\"\u003eOpen Flow Function\u003c\/strong\u003e – Provides rapid clear while maintaining maximum bubble saturation and smooth resistance.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1252\" data-start=\"1122\"\u003e\n\u003cp data-end=\"1252\" data-start=\"1124\"\u003e⚙️ \u003cstrong data-end=\"1158\" data-start=\"1127\"\u003e28\/18MM Joint Configuration\u003c\/strong\u003e – Large 28MM male joint connects to TAG 28MM beakers; accepts 18MM male slides or adapters.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1352\" data-start=\"1253\"\u003e\n\u003cp data-end=\"1352\" data-start=\"1255\"\u003e🧱 \u003cstrong data-end=\"1286\" data-start=\"1258\"\u003eThick Borosilicate Glass\u003c\/strong\u003e – Durable, precision-ground joints ensure airtight performance.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1458\" data-start=\"1353\"\u003e\n\u003cp data-end=\"1458\" data-start=\"1355\"\u003e💎 \u003cstrong data-end=\"1374\" data-start=\"1358\"\u003ePremium Feel\u003c\/strong\u003e – Engineered for both function and balance, with a polished scientific aesthetic.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-end=\"1463\" data-start=\"1460\"\u003e\n\u003ch3 data-end=\"1500\" data-start=\"1465\"\u003e\u003cstrong data-end=\"1498\" data-start=\"1469\"\u003eDownstem Measurement Note\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-end=\"1787\" data-start=\"1501\"\u003eAll TAG downstems are measured by \u003cstrong data-end=\"1552\" data-start=\"1535\"\u003einsert length\u003c\/strong\u003e (from the end of the frosted joint to the tip).\u003cbr data-end=\"1603\" data-start=\"1600\"\u003e👉 \u003ca href=\"https:\/\/www.thickassglass.com\/pages\/downstem-size-guide\" rel=\"noopener\" class=\"decorated-link\" data-end=\"1787\" data-start=\"1685\"\u003e\u003cstrong data-end=\"1729\" data-start=\"1686\"\u003eTAG Downstem Sizing \u0026amp; Measurement Guide\u003c\/strong\u003e\u003cspan class=\"ms-0.5 inline-block align-middle leading-none\" aria-hidden=\"true\"\u003e\u003csvg class=\"block h-[0.75em] w-[0.75em] stroke-current stroke-[0.75]\" data-rtl-flip=\"\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"currentColor\" viewbox=\"0 0 20 20\" height=\"20\" width=\"20\"\u003e\u003cpath d=\"M14.3349 13.3301V6.60645L5.47065 15.4707C5.21095 15.7304 4.78895 15.7304 4.52925 15.4707C4.26955 15.211 4.26955 14.789 4.52925 14.5293L13.3935 5.66504H6.66011C6.29284 5.66504 5.99507 5.36727 5.99507 5C5.99507 4.63273 6.29284 4.33496 6.66011 4.33496H14.9999L15.1337 4.34863C15.4369 4.41057 15.665 4.67857 15.665 5V13.3301C15.6649 13.6973 15.3672 13.9951 14.9999 13.9951C14.6327 13.9951 14.335 13.6973 14.3349 13.3301Z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003chr data-end=\"1792\" data-start=\"1789\"\u003e\n\u003ch3 data-end=\"1822\" data-start=\"1794\"\u003e\u003cstrong data-end=\"1820\" data-start=\"1798\"\u003eWhy You’ll Love It\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-end=\"2193\" data-start=\"1823\"\u003eThe \u003cstrong data-end=\"1857\" data-start=\"1827\"\u003eSuper Slit Matrix Downstem\u003c\/strong\u003e is designed for users who want the perfect mix of performance and refinement.\u003cbr data-end=\"1938\" data-start=\"1935\"\u003eIts multi-slit grid pattern delivers superior percolation with effortless clearing, producing a cool, chug-free pull every time. The 28MM connection allows for larger diffuser styles and easier cleaning while maintaining full 18MM accessory compatibility.\u003c\/p\u003e\n\u003chr data-end=\"2198\" data-start=\"2195\"\u003e\n\u003ch3 data-end=\"2229\" data-start=\"2200\"\u003e\u003cstrong data-end=\"2227\" data-start=\"2204\"\u003eMade To Order (MTO)\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-end=\"2473\" data-start=\"2230\"\u003eWant a specific downstem length or joint configuration?\u003cbr data-end=\"2288\" data-start=\"2285\"\u003eTAG’s \u003cstrong data-end=\"2311\" data-start=\"2294\"\u003eMade To Order\u003c\/strong\u003e program can produce nearly any combination across the catalog.\u003cbr data-end=\"2377\" data-start=\"2374\"\u003e👉 \u003ca href=\"https:\/\/www.thickassglass.com\/pages\/made-to-order-mto\" rel=\"noopener\" class=\"decorated-link\" data-end=\"2473\" data-start=\"2380\"\u003e\u003cstrong data-end=\"2417\" data-start=\"2381\"\u003eLearn More – Made To Order (MTO)\u003c\/strong\u003e\u003cspan class=\"ms-0.5 inline-block align-middle leading-none\" aria-hidden=\"true\"\u003e\u003csvg class=\"block h-[0.75em] w-[0.75em] stroke-current stroke-[0.75]\" data-rtl-flip=\"\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"currentColor\" viewbox=\"0 0 20 20\" height=\"20\" width=\"20\"\u003e\u003cpath d=\"M14.3349 13.3301V6.60645L5.47065 15.4707C5.21095 15.7304 4.78895 15.7304 4.52925 15.4707C4.26955 15.211 4.26955 14.789 4.52925 14.5293L13.3935 5.66504H6.66011C6.29284 5.66504 5.99507 5.36727 5.99507 5C5.99507 4.63273 6.29284 4.33496 6.66011 4.33496H14.9999L15.1337 4.34863C15.4369 4.41057 15.665 4.67857 15.665 5V13.3301C15.6649 13.6973 15.3672 13.9951 14.9999 13.9951C14.6327 13.9951 14.335 13.6973 14.3349 13.3301Z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003chr data-end=\"2478\" data-start=\"2475\"\u003e\n\u003ch3 data-end=\"2514\" data-start=\"2480\"\u003eFree 2-Year Limited Warranty\u003c\/h3\u003e\n\u003cp data-end=\"2691\" data-start=\"2515\"\u003eQualifying 1st Quality TAG glass purchased from thickassglass.com or shop.thickassglass.com on or after October 15, 2026 includes a Free 2-Year Limited Warranty. One eligible replacement within two years after delivery is 65% off MSRP (you pay 35% of MSRP), plus shipping \u0026amp; handling. Quartz, lower-grade items and other brands are excluded. \u003ca href=\"\/pages\/warranty-protection-plan\"\u003eFull warranty terms and earlier paid-plan coverage\u003c\/a\u003e.\u003c\/p\u003e","brand":"Thick Ass Glass","offers":[{"title":"(4.25\") Wavy Laser Engraved Logo - Clear .04","offer_id":68400319430880,"sku":"M28.F18-DS-328T-6870C-LE.04.1","price":39.99,"currency_code":"USD","in_stock":true},{"title":"(4.50\") Laser Engraved Logo - Clear .04","offer_id":68400319463648,"sku":"M28.F18-DS-328T-6871C-LE.04.2","price":44.99,"currency_code":"USD","in_stock":false},{"title":"(4.75\") Wavy Laser Engraved Logo - Clear .04","offer_id":68400319496416,"sku":"DS-328T-6875C-LE.04.1","price":44.99,"currency_code":"USD","in_stock":true},{"title":"(4.00\") Wavy Laser Engraved Logo - Clear .04","offer_id":68400319529184,"sku":"M28.F18-DS-328T-0904C-LE.04.2","price":39.99,"currency_code":"USD","in_stock":true},{"title":"(5.50\") Wavy Laser Engraved Logo - Clear .04","offer_id":68400319561952,"sku":"DS-328T-0203C-LE.04.1","price":44.99,"currency_code":"USD","in_stock":true},{"title":"(MTO) (4.50\") Wavy Laser Engraved Logo - Blue Stardust Accents .04","offer_id":68400319594720,"sku":"M28.F18-DS-328T-4319BStA-LE.04.1","price":74.99,"currency_code":"USD","in_stock":true},{"title":"(4.25\") Wavy Laser Engraved Logo - Blue Stardust Accents .04","offer_id":68400319627488,"sku":"M28.F18-DS-328T-4487BStA-LE.04.1","price":74.99,"currency_code":"USD","in_stock":true},{"title":"(MTO) (4.50\") Wavy Laser Engraved Logo - Blue Stardust Accents .04 (2nd Quality)","offer_id":68400319660256,"sku":"M28.F18-DS-328T-4319BStA-LE.04.1 (2nd Quality)","price":49.0,"currency_code":"USD","in_stock":false},{"title":"(4.75\") Wavy Laser Engraved Logo - Blue Stardust Accents .04","offer_id":68400319693024,"sku":"M28.F18-DS-328T-4488BStA-LE.04.1","price":74.99,"currency_code":"USD","in_stock":false},{"title":"(4.50\") Laser Engraved Logo - Clear .04 (2nd Quality)","offer_id":68400319725792,"sku":"M28.F18-DS-328T-6871C-LE.04.2 (2nd Quality)","price":39.0,"currency_code":"USD","in_stock":false},{"title":"(5.00\") Laser Engraved Logo - Clear .04","offer_id":68400319758560,"sku":"M28.F18-DS-328T-6876C-LE.04.2","price":39.99,"currency_code":"USD","in_stock":true},{"title":"(3.75\") Laser Engraved Logo - Clear .04","offer_id":68400319791328,"sku":"M28.F18-DS-328T-3506C-LE.04.1","price":39.99,"currency_code":"USD","in_stock":true},{"title":"(3.75\") Laser Engraved Logo - Clear .04 (2nd Quality)","offer_id":68400319824096,"sku":"M28.F18-DS-328T-3506C-LE.04.1 (2nd Quality)","price":33.99,"currency_code":"USD","in_stock":true},{"title":"(4.00\") Laser Engraved Logo - Clear .04 (2nd Quality)","offer_id":68400319856864,"sku":"M28.F18-DS-328T-0904C-LE.04.2 (2nd Quality)","price":33.99,"currency_code":"USD","in_stock":true},{"title":"(4.25\") Laser Engraved Logo - Clear .04 (2nd Quality)","offer_id":68400319889632,"sku":"M28.F18-DS-328T-6870C-LE.04.1 (2nd Quality)","price":33.99,"currency_code":"USD","in_stock":true},{"title":"(5.00\") Laser Engraved Logo - Clear .04 (2nd Quality)","offer_id":68400319922400,"sku":"M28.F18-DS-328T-6876C-LE.04.2 (2nd Quality)","price":33.99,"currency_code":"USD","in_stock":true},{"title":"(6.00\") Laser Engraved Logo - Clear .04","offer_id":68400319955168,"sku":"M28.F18-DS-328T-3499C-LE.04.1","price":39.99,"currency_code":"USD","in_stock":true},{"title":"(6.00\") Laser Engraved Logo - Clear .04 (2nd Quality)","offer_id":68400319987936,"sku":"M28.F18-DS-328T-3499C-LE.04.1 (2nd Quality)","price":33.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2108\/6013\/files\/DS-328T-6871C-LE.04.1--7-_attr1_subject_og.jpg?v=1793586223","url":"https:\/\/glasscitypipes.com\/products\/tag-28-18mm-matrix-bong-downstem","provider":"Glass City Pipes","version":"1.0","type":"link"}