Rotating Speed:0-3300r/min positive and negative design,easy to disassemble. One-handed operation, small and convenient, easy to use and operate. Self-contained LED lighting, large vents to dissipate heat, not easy to heat. Suitable for wedding shelf construction, stage construction, bicycle repair and car repair. The machine adapted for 18V 20V Battery (Battery Not Included) Maximum Torque:220N.M Steering:Forward and reverse Colour:As Shown Material:Plastic+Metal Size:3/8Inch square head Package Contents: 1 * Electric Ratchet Wrench(without battery) Only the above package content, other products are not included. Note: Light reflection 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.