Grizzly G0516 Combo Lathe with Milling Attachment Distance between centers: 21-Inch; Lathe motor size : 3/4 HP; Lathe spindle bore: 3/4-Inch; Mill/drill motor size : 1/2 H Lathe motor size : 3/4 HP Lathe spindle bore: 3/4-Inch Mill/drill motor size : 1/2 HP Swing: 9-3/4-Inch 12 3/4-Inch