This machine is compact in size & robust in design. Paper replacement is easy. Built in dustcollector, collects all the hazardous particles in a separate disposable bag.SpecificationDisc Diameter 350mmDisc bore 40mmDisc speed 1400 / 2800 rpmPolish paper disc size Diameter 350mm x 40mm holeDisc Drive motor 1 HP 3 phase 440V 50HzMachine dimensions 470 x 470 x 980 (LXBXH) mmWeight 125 KgsInput Power 440V 3 Phase 50Hz