Click to expand Tap to zoom Water Faucet Bubble Cap Carb Cap by isellglass shop Save $-12.99 $34.99 | / glass bubbler carb cap - $34.99 glass bubbler carb cap Options: 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart Thick heady boro glass bubble caps, fits most normal size bangers. 22mm around.