Description: This small electric drill uses 5V direct current. Most USB power adapters with 2A output can be used for power supply. The drill is suitable for perforating ordinary density plastic and wood, such as airplane models, car models, bamboo boards, ice cream sticks, chopsticks, bird cages, animal tooth bones, shells, PCB circuit boards, books, resin toys, resin ornaments, pearls, acrylic crystals, etc., should be no more than 8 mm in diameter. Made of high quality material, sturdy and durable in use. Powered by USB cable, convenient to use. Package includes: 1x Mini drill, 3x Bits(1.1mm) and 1x Wrench Specification: Working voltage: DC 5V Working current: 2A (blocked rotor 3A) Power matching: 360 motor Motor shaft diameter: 2.3mm Motor speed: 11000 rpm without load Case material: plastic Size: 123x35mm Weight: 125 grams Power interface: 1.5m USB plug cord Chuck model: brass 2.3-1.2 (clamping range 0.7~1.2mm) Package Includes: 1 Set of Mini Electric Hand Drill Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on-line shopping!