10pcs 2.0-4.0mm Hex Shank Twist Drill Bit & Cross Slotted Screwdriver Bit Set

S2 steel bits and high speed steel drill bits with high hardness, large torque and long durability.

Accurate size allows the bits to smoothly insert into the fastener head for reduced wear.

Clearly marked with the specifications of drill bits for easy access.

1/4 inch hex shank designed for quick change of bits.

Can be used with electric screwdriver, cordless drill or standard drill chuck.