TAG - 28/18MM Matrix Bong Downstem

TAG – 28/18MM Super Slit Matrix Downstem

Matrix Precision. Maximum Airflow. Premium Function.

The TAG 28/18MM Super Slit Matrix Downstem is engineered for high-performance diffusion.
Featuring 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.

Key Features

• 🧩 Matrix Super Slit Design – High-density grid layout multiplies diffusion points for smoother, more refined airflow.

• 💨 Open Flow Function – Provides rapid clear while maintaining maximum bubble saturation and smooth resistance.

• ⚙️ 28/18MM Joint Configuration – Large 28MM male joint connects to TAG 28MM beakers; accepts 18MM male slides or adapters.

• 🧱 Thick Borosilicate Glass – Durable, precision-ground joints ensure airtight performance.

• 💎 Premium Feel – Engineered for both function and balance, with a polished scientific aesthetic.

Downstem Measurement Note

All TAG downstems are measured by insert length (from the end of the frosted joint to the tip).
👉 TAG Downstem Sizing & Measurement Guide

Why You’ll Love It

The Super Slit Matrix Downstem is designed for users who want the perfect mix of performance and refinement.
Its 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.

Made To Order (MTO)

Want a specific downstem length or joint configuration?
TAG’s Made To Order program can produce nearly any combination across the catalog.
👉 Learn More – Made To Order (MTO)

Free 2-Year Limited Warranty

Qualifying 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 & handling. Quartz, lower-grade items and other brands are excluded. Full warranty terms and earlier paid-plan coverage.