Dynabrade® Disc Sander, Tool/Kit: Bare Tool, 2 in Disc dia, 1/4-20 Male, 20000 RPM, 0.5 hp, 28 scfm, 90 psi Air, 1/4 in NPT Air Inlet, Front Exhaust Location, 3/8 in Minimum Hose Size, 7° offset, 82 dBA, 6 in L x 5-1/2 in H. Dynabrade® 52402 Disc Sander, 2 in dia Disc, 1/4-20 Male Arbor/Shank, 0.5 hp, 28 scfm Air Flow, 90 psi