The PCB420SA a regnant 3/4 HP induction ball bearing motor that delivers 3,450 RPMs for the belt and 2,160 FPM on the disc for speedy, good sanding. The electric sander casebook 4 `` x 36 '' sanding belts and 8 '' diameter sanding discs. The uninominal knob belt tracking adjustment professionals to amend belt alignment just, while a spry release belt tension mechanism makes changing belts almost facile. It also a inbuilt dust port and bag that aids in keeping work areas virtually unrestricted of sawdust, as well as two immense, formed aluminum tables -LRB- belt : 4-15/16 '' x 6-11/16 '' ; disc : 5-29/32 '' x 10-25/64 '' -RRB- that tilt 0-45 degrees for microscopic belt and disc sanding. A opportune miter gauge is for precise angle cuts on either table.