Premium CR-V SteelMade from drop forged and heat treated chrome vanadium steel (50BV30) with black phosphate finish, providing the durability for a hard use. Set includes SAE: 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, 13/16, 7/8, 15/16, 1, 1-1/16, 1-1/8, 1-1/4", Metric: 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 21, 22, 24, 27, 30, 32mm; Accessories1/2" Extension bars: 3, 5, 10-inch, 1/2" By 10-inch length quick-release ratchet handle 72-tooth, 1/2" Impact universal joint, 1/2" (F) to 3/8" (M) reducer, 3/8" (F) to 1/2" (M) three way adapter, 1/4" to 1/2"drill adapter. Laser Marking High-contrast size marking is permanently laser etched and easy to read, even in low light. Service GuaranteeAll MIXPOWER Tools meet or exceed ANSI performance standards. It comes with 1 year quality guarantee.