... size:200x460,254x508,305x635,305x1020,406x813, Saddle Moving Horizontal Shaft & Rectangular Surface Grinder SG-2550AH, SG-2550AHR, SG-2550AHD Specification: ... .WHEEL HEAD VERTICAL MOVINGAUTO FEED(AHD) 0.005/0.01/0.02/0.03/0.04/0.05mm/strokeRAPID SPEED ...