Black Allen keys are made from Chrome Vanadium Steel which withstand up to 30% higher torque as compared to Allen keys made Carbon Steel. Allen keys are precision drawn for perfect matching of Allen keys with screw head.
10 PCS (1/6, 5/64, 3/32,
1/8, 5/32,3/16, 7/32, 1/4, 5/16 & 3/8)