Interstate Pneumatics H6 V-Grip Type Crimper &ndash; 2 Opening 2 Dies for 1/4&rdquo; & 3/8&rdquo; Hose 2 Opening 2 Dies for 1/4" & 3/8" Hose - (Die Outer Diameter = 0. 560" / 0. 725") Nickel plated finish Made of high quality alloy steel Self releasing mechanism, Heavy duty handles One piece forged jaw for super strength