Description Screwdriver Set 137 in 1 This electric screwdriver set has 137 units including 120 precision CRV silver nickel bits 1 suction cup with SIM pin 1 metal pry bar 120 mm POM pry tool 1 flexible extension shaft 1 cleaning brush 1 angled tweezer 1 magnetizer demagnetizer 1 electric screwdriver handle 1 magnetic pad 1 USB data cable 1 3 red thin triangle triangle pry pieces 3 red thick triangle triangle pry pieces 1H4X55mm extension shaft assembled in the screwdriver CRV silver nickel bits our bits are made of CRV material CRV hardness range 50 55 HRC each bit has its type engraved on the surface so you can quickly find the bit you want High speed and torque adjustment Our electric cordless screwdrivers are available with speeds up to 200 rpm no load speed and adjustable torque 0 15 0 35Nm for different needs Combined with the forward and backward buttons of the electric screwdriver different types of screws can be tightened or loosened quickly Wide use Portable precision electric screwdriver tools are suitable for any professionals and hobbyists for repairing PCs laptops game consoles watches toys and eyeglasses etc Easy to use Our screwdriver set has a magnetic Specifications Model ES20Number of pieces 137Power source Rechargeable batteryBits CRV silver nickel Hardness 50 55 HRCSpeed Up to 200 rpm no load speed Torque Adjustable between 0 15 0 35Nm Magnetic Screwdriver Head For effortless assemblyHandle Frosted design for s