Pro level dabbers were the first to discover the Bubble Carb Cap, yet it’s a fun and useful accessory for every experience level. Pick the cap that suits your rig best with a wide selection of six cool colours. The benefits of the spherical shape are the ability create a seamless fit on top of a dome or banger; 50 mm length, tube diameter of 12 mm and bubble diameter of 20 mm to fit onto a wider variety of sizes. So give no thought to whether the bubble cap will fit