3/8" Drive x 5/16" Standard Universal Driveshaft And Axle thorough and exact heat treatment

thorough and exact heat treatment insures the correct balance of strength and durability

Curved end ensures better leerage in small areas

000 RPM to deliver pit crew power

Plastic holders firmly retain each key in a size marked hole

Also no tools necessary to load paper

3/8" Drive x 5/16" Standard Universal Driveshaft And Axle thorough and exact heat treatment3 8" Drive x 5 16" Standard Universal Features and Benefits: Made of high quality steel (chrome molybdenum) Engineered specifically for use with impact tools, using the most up to date industrial specifications Made to transfer the pressure from the thinnest part of the socket wall toward the thicker section, resulting in increased strength Lifetime warranty This impact, socket features high torque drive, which limits the amount of wear on the corners