12pcs 1/4 Inch Hex Shank T5-T40 Torx Head Screw Driver Bit Set Security Tamper Proof Star 6 Point Screwdriver Kit Tools

Type of head: Type of shank: 6.35mm/ 1/4-inch Hex Shank, Overall length: 50mm/ 2 inch

12 in 1 Size: T5, T6, T7, T8, T9, T10, T15, T20, T25, T27, T30, T40 (Please Note: T5, T6, T7 are NOT Tamper Proof.)

Easy to Use: Strong magnetic Hex Shank can suck the screws easily when used it.

Excellent Material: Made with high grade S2 steel material for a long lasting existence.

Wide Using Application: Can be used with electric screwdriver, manual screwdriver, electric drill, group general tools, ect.

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