Power: can work from 3-12V Maximum RPM: 22000 Rated power: 20W Rated torque: 600G.CM Capacity range: 0.3-4mm Color: silver Material: metal Package Contents: 30 * 0.5-3mm drill bit 3 * 0.3-4mm JTO keyless chuck Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in a little different from the real thing. The measurement allowed error is +/- 1-3 cm.