The best way to overcome ripples and waves when sanding large panels! The rigid bed and solid frame of this professional quality 17-1/2in. pneumatic long board samder maintains even cutting action across the entire surface and provides ample power for quick material removal. 2,200 Strokes per minute. Requires 5 cfm at 90 p.s.i.. Uses heavy duty needle bearing construction. Uses 17-1/2in. long by 2-3/4in. wide abrasive paper, available in 36 Grit (31100), 40 Grit (31099), 80 Grit (31098) and 240 Grit (31097). Full 2 year manufacturer's warranty. Imported.