It is effective and easy to remove stubborn rust, dirt, paint and slag. Easy to operate and safe. It is with a soft-Press handle and ergonomic design. It ensures vibration reduction and safe operation. Speed: 4000rpm Air consumption: 4.0cfm Air pressure: 90psi colour:black Material:metal size:Rust removal needle diameter: 3mm Intake connector: 1/4 inch Length: 32.5mm Package Contents: 1* rust remover 1* intake connector Notes: Please keep the product clean. Keep from children when using. Wear protective gear when using. 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.