Specification Name: Impact screwdriver set Material: chrome vanadium alloy steel Color: Silver Handle length: 16cm Interface size: 1.25cm HIGH QUALITY MATERIAL: Impact drill bit made of chrome vanadium alloy steel, durable, impact resistant, wear resistant and long lasting. The impact drill bit has a comfortable handle and a non-slip knurled grip. Suitable for your projects: Use manual impact driver sets to loosen or tighten rusty screws and bolts; use impact socket drivers on nuts, bolts and other fasteners; common applications include brake caliper replacement How to use: Insert the bit of your choice into the impact screwdriver and loosen screws counterclockwise or tighten clockwise; tap the top of the manual impact screwdriver with a hammer Scope of application: Our screwdriver sets are highly compatible. Suitable for automotive and motorcycle repair, with a wide range of applications to meet your needs. Product list. 1*Impact screwdriver set