Height of centers over bed: 110mm Max Distance between two centers: 520mm/350mm Max Swing diameter over bed: 200mm Max Swing diameter over carriage: 122mm Max Length of turning: 520mm/350mm Spindle hole diameter: 20mm Spindle tape bore: No. 3 Spindle speeds: 6 kinds Spindle speeds forward(rpm) per minute reverse: 170~1950r/min Number of metric screw threads turning: 17 kinds Screw pitch of metric size screw threads turning: 0.25~3mm Number of inch size screw threads turning: 17 kinds Screw pitch of inch size screw threads turning: 8~48 t. P. I Number of longitudinal of feeds: 5 kinds Range of longitudinal feeds: 0.04~0.2mm External diameter of feed screw: 20mm Screw pitch of feed screw: 3mm Rack modulus: 2 Max Travel of compund rest: 70mm Max Transversal travel of carriage: 115mm Max Longitudinal travel of saddle(manual): 520mm/350mm Taper bore of tailstock barrel: No. 2 Max Travel of tailstock barrel: 50mm Power of motor voltage frequency: 370W 220W, 50HZ(110V, 60HZ) Overall dimension of the machine tool(L*W*H): 125*57*56cm/110*57*56cm Weight of machine tool: 110kg/130kg