Ace Standard Round Head Ratchet is made from high-grade chrome vanadium steel Ratchet features a TPR grip handle & shaft with Ace logo ratchet has 0.95 cm drive (3/8 inch) & 41 tooth gear 202N.m torque, HRC handle 40 to 48, HRC square head 40 to 50, 12.5 diameter for round handle Meets or exceeds ANSI standards