Acouto 1/4" Pneumatic Die Grinder 90PSI Pneumatic Air Die Grinder Grinding Kit Polishing Engraving Tool

Specifications: Item Name: Air Die Grinder Material: Aluminum Alloy Color: Silver + Black Speed: 20000-23000RPM Collet Size: 1/4inch(6mm) Air Inlet(N.P.T): 1/4inch Working Air Pressure: 90PSI Air Consumption: 4CFM : Rear Overall Length: 156mm/6.1inch Package Weight: approx.448g Package List: 1 * Air Die Grinder 2 * Spanner 1 * Adapter Note: Installation instruction is not included, professional operation is highly recommended.