Small size and light weight, designed with comfort grip handle for better control during drilling. 3 speeds adjustable in the range of 5000-15000 r/min, on button to change according to the material. Great for cutting, engraving, milling, grinding, polishing, removing and drilling. Applicable material: metal, wood, plastic, modeling clay, jewelry, aluminum, etc. Power Source: Battery Collect Chuck Diameter : 0.5-3.2mm Rated Input Power : 10W Non-Load Speed : 5000-15000 r/min Idling Time: 2 hours Grinding Work Time: 1 hour maximum : Woodworking/Polishing/ Engraving Output Voltage : 3.7V / 10A Charge Voltage : 5V DC (USB) Weight: 183g colour:Grey Material:ABS size:Electric Drill Bit Collet: 0.5mm, 1.0mm, 1.5mm, 2.4mm, 3.0mm, 3.2mm Package Contents: 1 x Electric Drill 1 x USB Wire 1 x Clamp Mandrel 1 x 1 x Tapping Rod 1 x Circular Saw Blade 2 x Diamond Grinding Needle 2 x Wool Polishing Wheel 3 x Sandpaper Circle 3 x Twist Drill Bits 5 x Wheel Grinding Head 6 x Electric Drill Bit Collet 1 x Storage Box Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.