8PCS 1/2" DRIVE HEX SOCKET SET H5-H19 High-strength chrome-molybdenum steel structure, black phosphating treatment, corrosion resistance, rust resistance. 1/2" Drive Impact hex socket set include 5, 6, 8, 10, 12, 14, 17 and 19 mm. The one-piece construction is more durable and can handle higher torques. Precision machined drill tips ensure precise dimensions and a precise fit. Length: 78mm / 3 inch Material: CR-MO Sizes: H5, H6, H8, H10, H12, H14, H17, H19