●Aluminium alloy, S2 Steel ●[Handle Like a Pro] Low center of gravity drum ergonomic design plus self-drive and the smooth rotating cap allows rapid twisting and less fatigue. Whole metal body and non-slip texture ensure accurate screw ●[Precision Tough S2 Steel Bits] Rust-resistant bits with specific colors representing different batch heads for fast search and neatly arranged ●[Transparent & Magnetic Frame Case] Easy and quick to reach the box of bits at a glance. Never cause a mess whether you are using them or not ●[Various Applications] With the most common drive types, you will have the essentials with no fillers and no duplicates. Only the bits you need to repair tech like phones, game consoles, laptops, drones,desktop computers and maintain your PC, watch, controllers, even jewelry, watch and eyeglasses ●[Trusted Support & Warranty] FANTASTICAR provides a ONE-YEAR guarantee against defects in material and workmanship. Any problem please feel free to contact us