Size - TT20 TT25 TT27 TT40 TT45 Star 7 Point Head, 1/4" Hex Shank, 2" (50mm) total length.
Material - Made of S2 alloy steel material with nickel plated finish, good toughness, wear-resistant and durable. Hardness up to 60 HRC, suitable for industrial use.
Feature - The magnetic bit tip can hold the screw securely before installation and after removing the screw to improve efficiency.
Usage - Can be used for electric screwdrivers, manual screwdrivers, electric drills, air drills, etc.
Notice - Do not turn the screws with mismatched size to avoid damage to both the screw and the drill.