Features and Benefits:�Adjustable 3/4 x 20.5" air belt file for cleaning, weld prep andmaterial removal on tubing or any radiused work piece.�Adjust roller position to create slack in the belt that allows forsanding along curved surfaces.�SPECIFICATIONSFree Speed: 16,000 rpmSize of Belt: 20 x 520 mmNet Weight: 3.08 lbs. (1.4kg)Overall Length: 370 mmAir Consumption: 4 cfmAir Inlet: 1/4"Air Pressure: 90PSIMotor HP: 0.6 HPAir Exaustt: REARSound Level: 88 dBThe Astro Tool 3039 Tube & Weld Belt Finish Sander with Belts is designed to adjust a 3/4 x 20.5" air belt file for cleaning, weld prep, and material removal on tubing or any radiused work piece. Easily adjust the roller in this tool to create slack in the belt that allows for sanding along curved surfaces.Specification:Free Speed: 16,000 rpmSize of Belt: 20 x 520 mmNet Weight: 3.08 lbs. (1.4kg)Overall Length: 370 mmAir Consumption: 4 cfmAir Inlet: 1/4"Air Pressure: 90PSIMotor HP: 0.6 HPAir Exaustt: REARSound Level: 88 dB