Attributes:* HRC: 58-62* Size: PZ3* Drive Size: 3/8"* Total Length: 48mm / 1.9"* Material: S2 Steel and Chrome Vanadium SteelWhat Is Included:* 2 Pieces x Bit SocketsApplications & Features:--- The impact bit socket is a tool specially used for installing and removing screws or nuts, and is usually used with tools such as impact drills.--- The bits are suitable for automobiles, mechanical repairs, construction processes, home installation equipment, etc., and are used in conjunction with ratchet wrenches and electric wrenches.--- The sleeve is made of CR-V and the bit is made of S2 steel, which gives it high hardness and strength, enables it to withstand high pressure and impact, and is wear-resistant and corrosion-resistant.