Description: Ergonomic handle of this screwdriver is comfortable to grip. It has over-current protection, voltage protection, over-temperature protection, charge and discharge protection for safe use. It comes with LED light, so it can work easily in the dark. Featuring a magnetic suction design, this screwdriver allows quick switching of the batch head. It has 4 grades of torque adjustment, professional mechanical torque regulation, when the torque reaches the value of the grade, the mechanical clutch decouples and slips, effectively preventing damage to screws or items caused by over-screwing. It is constructed of abs plastic material. The length of this product is 170mm. The diameter of each product is 43mm. It is suitable for furniture assembly, kitchenware repair, screw tightening, computer appliance repair, etc. Item Name: Electric Screwdriver Material: ABS Plastic Features: Four Adjustable Torque, Built-in Lithium Battery, USB Charging Battery: Built-in 1300mah Lithium Battery Charging Time: 3 Hours Collet: 6.35mm (1/4") Rotational Speed: 200rpm/min Torque (Electric): 5Nm Rated Voltage: 3.6V LED Light: Yes Four-speed Torque: Adjustable Size Details: Length: 170mm/6.69"(Approx.) Diameter: 43mm/1.69"(Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: Style 2pcs: 1 x Electric Screwdriver 1 x USB Charging Cable 2 x Bits or Style 20PCS: 1 x Electric Screwdriver 1 x USB Charging Cable 1 x Universal Flexible Shaft 1 x Bit Connecting Rod 18 x Bits