Made of Drop Forged, Heat Treated Heavy Duty Chrome Molybdenum Steel with a Corrosion-Resistant Black Phosphate Finish. Provides the strength and flexibility to handle high torque impact. Used for installing, dismantling and repairing wheel or axle nuts on vehicles. Solid one piece construction eliminates weak points and increases durability. High-contrast size marking is permanently laser and easy to read, even in low light. Come with a heavy duty blow molded storage case, easy to carry. Meets or exceeds ANSI performance standards. /br Description /br /br CASOMAN 3/4 Inch Drive Impact Hex Driver Set made of Drop Forged, Heat Treated Heavy Duty Chrome Molybdenum Steel with a Corrosion-Resistant Black Phosphate Finish. Provides the strength and flexibility to handle high torque impact. Used for installing, dismantling and repairing wheel or axle nuts on vehicles. Solid one piece construction eliminates weak points and increases durability. High-contrast size marking is permanently laser and easy to read, even in low light. Come with a heavy duty blow molded storage case, easy to carry. Meets or exceeds ANSI performance standards. /br /br /br Include /br /br 14mm, 17mm, 19mm, 22mm, 24mm. /br CASOMAN is a professional manufacturer of hand tools,rachet and all kinds of sockets products. All CASOMAN products come with 1 year quality gurantee. /br