14PC Security Torx Bit Set 3" Long Tamper Proof Star Screwdriver Bit Set 1/4" Hex Shank S2 Steel T4 - T40 Magnetic Impact Driver Drill Bits

WELL-EQUIPPED BITS SIZE: 14 piece torx screwdriver set in the following size: tamper proof torx bits of T4, T5, T6, T7, T8, T9, T0, T5, T20, T25, T27, T30, T35, T40

• EXPERIMENT TESTS: The star bits have experienced torsion and hardness test.The results of tests show that the maximum torsion force of bits are 180-200N and the hardness of bits are 57-59HRC.The high torsion and proper hardness avoid the bits break and wear
• USAGE VERSATILITY: 1/4 inch quick release hex shank driver bits fit for electric screwdriver, hand screwdriver, electric drills & air drills.Ideal for working on vehicles, bicycles & furniture.Assembling/repairing your furniture in an easy way
• INDUSTRIAL GRADE QUALITY: The security screwdriver bit set is made from S2 steel material in a matt rust-resistant finish with labeled size marks & magnetic tips. Two portable rubble strips store in a durable plastic case