StarTech.com 55-Bit Electric Precision Screwdriver Set - Portable Cordless Battery Powered Bit Driver Kit for Electronic, Laptop, Computers, Tablet & Phone Repairs - Magnetic Work Pad. Product type: Power screwdriver, Handle shape: Straight handle, Product colour: Silver. Idle speed (max): 110 RPM, Torque (min): 0.25 N⋅m, Torque (max): 0.35 N⋅m. Power source: Battery, Battery technology: Alkaline. Width: 16 mm, Depth: 180 mm, Height: 16 mm. Number of batteries included: 2 pc(s), Number of bits: 55 pc(s), Screwdrivers/bits tips included: Hex (imperial), Pentalobe, Phillips, Robertson, Slot, Spanner, Torx, Tri-Wing, Triangle