Attributes:* Drive Size: 1"* Total Length: 150mm / 6"* Material: Chrome Molybdenum Steel (CR-MO)* Finish: Black PhosphateWhat Is Included:* 1 Piece x Impact Extension BarApplications & Features:--- for electric, and pneumatic impact wrenches. Wide used for reaching deep screw holes in automotive repair, DIY crafting, home maintenance, and most general repairs.--- Made of heat treated chrome molybdenum steel with a corrosion-resistant black phosphate finish, high torque and durability.--- Spring-loaded ball detent provides a secure hold onto sockets and prevents them from dropping.--- The through-hole in the drive end locks onto the tang of impact wrenches or drivers so it won't fall off or stick on fastener heads.Useful Tips:--- The product has no insulation properties and is not suitable for electrical environments. .