Dividing Heads Model No. DH1, Height of Head: 8-3/4", Head of Center: 5-1/8", Headstock Taper: MT3, Spindle Thread: 1-1/2"-8, Weight: 80 lbs. Model No.: DH1 / Height of Head: 8-3/4 Height of Center: 5-1/8 Headstock Taper: MT3 Spindle Thread: 1-1/2 - 8 Weight: 73 lbs