Air Belt Sander This Air Belt Sander offers versatility with its ability to use either a 1/4" x 24" belt, or a 1/2" x 24" belt. This is ideal for deburring and polishing in industrial settings. The unit includes a front exhaust, a built in silencer, keeping the noise level to approximately 84 dB(A), and allows you to adjust the sanding track. Features include... Rotates 360° for efficient use. 1/4" NPT air inlet 4.2 CFM 22,000 RPM