Click to expand Tap to zoom TC34MM O2 / CO2 Stone holder - Hose nipple by Brewtools Sale €31,95 Out of stock 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart TC34MM O2 / CO2 Stone holder - Hose nippleFits hose from inner diameter 6mm - 10 mm.