24Pc Security Torx Bit Tamper Resistant Star Set S2 Steel 1" & 2.3" Long T5- T40

S2 Material Forging:The drill bit is made of high quality S2 alloy steel ,with sturdy hardened & tempered construction. General tools: The 1/4" hex handle can be used with electric screwdrivers, hand screwdrivers, electric drills, combination general purpose tools and any standard drill.