3pcs quick release screwdriver extension bits holders with 1/4inch quick-change hex shanks fit any standard size screwdriver bit, 1/4inch impact drivers and hand-held drivers.
Change external six angle into internal six angle - Strong Practicability.
High hardness & non-slip, large torque & long life and durable.
The screwdriver head can lock the connecting rod . Great for exchanging the sleeve and the joint, prolonging the connecting rod.
Used to join electric screwdriver, screwdriver, screwdriver nozzle, screwdriver head. Suitable for electric, pneumatic screwdrivers and other screwdriver bits of power tools, drill extended.

colour: black
Material: carbon steel

Package Contents:
3 x screw guide