#1 Square Insulated Screwdriver (4 in. Shank) BoltsandNuts.com Tap Drill Size 7/16"

Tap Drill Size 7/16"

They display high red hardness

Part Number: Assortment Kit #639109 Pieces

Length:1-3/4"

External Thread: M16-2

#1 Square Insulated Screwdriver (4 in. Shank) BoltsandNuts.com Tap Drill Size 7/16"Rated for 1000 Volts The driver handle and shank are insulated to protect against electrical shock for voltages up to 1000 V AC and 1500 V DC; the shank diameter is reduced so the insulation can be molded flush with the tip, improving access Designed for Speed and Torque The front of the handle is round for quick turning and the middle transitions to a tri lobe shape that provides a secure grip for high torque driving Size Markings in Three Locations