Zoom icon Click to expand Tap to zoom Chevron down icon Chevron down icon 11mm Blind Ferrule For 1/4" Cap by Coffee Addicts No reviews Save Liquid error (product-badge line 32): Computation results in '-Infinity'% $4.00 | / 1 2 3 4 5 6 7 8 9 10+ Quantity Chevron down icon Quantity Add to cart Spinner icon Or, "1/4PLUG STEAM BOILER CROSS". Basically, a plug for a 1/4" fitting that has a hole in it.