Specifications: Includes both a 6" PSA (Pre Stuck Adhesive) and a 6" Vacuum Assist Hook and Loop Backing Pad, Free Speed: 10, 000 rpm, Air Consumption: 3. 8 cfm (1081 l/min), Operating Pressure: 90 psi (6. 3 bar), Air Inlet Size: 1/4" BSP, Weight: 2. 53 lbs. (1. 2 kgs). A-Weighted Sound Pressure Level: 72. 7 dB, Sound Power Level: 83. 7 dB, Vibration in the Handle: 1. 44 m/s²