Powerbuilt 5/16 x 8 Inch Slotted Screwdriver with Double Injection Handle – 646137

This line of Powerbuilt screwdrivers feature drivers that are built with premium double-injection Trilobular handles for maximum comfort and grip. Shafts are constructed of (SVCM) Silicon Vanadium Chrome Magnesium alloy Steel for added durability and torque. Large size drivers have hex bolsters, and sizes are marked on the handle caps for easy size identification. All drivers exceed ANSI specifications for quality and performance.