Description
1) 3 pieces set with different length (60mm, 100mm, 150mm).2) Quick change and release system allows you to quickly install, lock and unlock the bit easily.3) Magnetic bit holder provides convenient pick-up and retention of screws.4) Hex Shank: 1/4" hex shank (6.35mm)can be easily fit into power driver, drill and handheld screwdriver.5) Extension set for all kinds of screwdriver bits, screwdriver head conversion uses