Power: can run from 3-12V Max RPM:22000 Rated wattage: 20W Rated torque: 600G.CM capacity range :0.3-4mm Color: silver material: metal Package Content: 10* 0.5-3mm drill bit 1* JTO keyless chuck 0.3-4mm 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.