Mini size, light weight, easy to carry. Powered by USB cable, convenient to use. With a switch on USB cable for easy control. Made of high quality material, sturdy and durable in use. Cylinder drill body is comfortable to hold. Mainly be used to drill wooden board, plastic board, paper sheet(thickness within 10mm); aluminum board, circuit board(thickness within 10mm). Electric Drill Specification: Material: Metal Color: Black Power Supply: DC 5V Rated Output Power: 18W No-load Speed: 15000rpm Suitable Collet Range: 0.7-1.2mm Drill Length(not included the drill bit): approx. 110mm / 4.33inch Drill Diameter: approx. 30mm / 1.18inch USB Cable Length: approx. 1.95meter / 6.40inch Weight: approx. 119g Package Included: Package A:3 x Drill Bits(1.1mm in diameter) Package B:10 x Drill Bits + 1 x Manual Normal Drill Package C:1 x 1set Drill Bits set(3.0-3.2mm 105Pcs Grinding Sanding Polishing Rotary Tool Kit Set) Package D:1 x Electric Drill with USB Cable(adapter is not included) + 3 x Drill Bits(1.1mm in diameter) + 1 x Wrench We will send the package by your choose. Note: 1. This product is not suitable to drill these material, such as bodhi, thick metal, wall and stone. 2. There may be some error in drilling precision. 3. USB adapter may exist incompatibility. 4. It can not be connected to grinding or polishing machine. 5.If you want to change to a larger diameter head, you need to replace the motor chuck, the machine motor shaft diameter is 2 mm.