45PCS Drill Bit Set Screwdriver Bit Set Impact Driver Bit Set for Wood, Metal, Steel and Security.This drill bit set and screwdriver bit set all come with a plastic box for storage and organization. Its a great ideal for appliances, computers, fixtures and electronic gadgets ,all home and workshop DIY. Features: The drill bit screwdriver are built to last, composed of alloy steel for maximum durability. Long-lasting engineered tips provide enhanced strength that can handle high-torque impact dr