Click to expand Tap to zoom Pin Lock Coupler - Gas In with Nut and Barb Save Liquid error (product-badge line 32): -Infinity% $10.23 | / 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart ${{amount}} Gas In PIN LOCK Coupler, complete with 1/4" hex nut and 5/16" barb.