MODEL 720 . Air Tension 2 x 72 Belt. MODEL 720 . Manual Tension 2 x 72 Belt *M720 ACCOMMODATES 1/2 X 72" & ACCEPTS ALL INTERNAL GRINDING ARM ACESSORIES ... MODEL 960-250 Surface Grinder. 960-250, 2.5x60, 7" Contact Wheel 1.5 HP, 120V, Variable Speed w/pedestal. 99730, 24" Surface Grinder, X-Axis, Tilt, Tool Tray.Web