| CIW500 | CIW800BL |
| Voltage: 21V | Voltage: 21V |
| Battery cap:4.0Ah Li-ion | Battery cap:4.0Ah Li-ion |
| Chuck size: 1/2" HEX | Chuck size: 1/2" DR |
| No-load speed: 0-1600/2100/2400r/min | No-load speed: 0-1400/1800/2300r/min |
| Impact frequency: 0-3100/3600/6000Bpm | Max torque: 500/600/800Nm |
| Max torque: 400/450/500Nm | |
| BL MOTOR TECHNOLOGY | BL MOTOR TECHNOLOGY |