Specifications:This micro USB drill featuring mini size and light weight is easy to carry and store.It is powered by the USB cable. There is a switch on the USB cable for easy control.Made from high quality stainless steel and alloy, the grinder is very sturdy and durable.It is widely used for wood board, plastic board, paper sheet, aluminum board, circuit board.Item Name: Electric Grinder SetModel: X70210Material: Stainless Steel, AlloyPower: 7WChuck Range: 0.7-1.2mmPower Supply Voltage: 5-6VPower Supply Current: above 2A (Recommended)Feature: Mini Size, Easy to Operate, Wide Application, Hardware ToolElectric Grinder Size: 11.5cm x 2.5cm x 2.5cm or 4.53" x 0.98" x 0.98" (Approx.)Cable Length: 1.8m or 70.87" (Approx.)Notes:Due to the light and screen setting difference, the items color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x Electric Grinder1 x Hex Wrench1 x 1.0mm Twist Drill Bits2 x 1.2mm Twist Drill Bits