Shank-W/5/16in Recess 1/4-Bore X 3inL ChromeAbeco3" Shanks for Dispensersfor use in connecting to coil or cold plate dispensers For use with 50' Coil Dispensers Fits 5 16" Diameter tubing< li> How it Works: The back end of the shank has a 5 16" pre drilled r ecess to support the end of 19A03 100 19A03 102 or 19A03 105 50' stainless steel coil used in a coi l cooler. Keeps coil from slipping away from back of shank when the coil does not sit flat on t he bottom of the cooler.