Sani-Grinder(tm) Drum Sander is ideal for finishing foot orthoses and for general brace and splint edge finishing. Comes with an integral vacuum and bag for debris pickup. Sanding surface has 3" face. Drum diameter is 3". Powerful two-speed, 1/4 hp motor runs at 1,725 or 3.450 rpm. 60 cycle. 3.3 amps. 115V. 45 lbs. Sander has internal vacuum to minimize debris.