Model: T8120*20 Boring diameter: 36-200mm; Max.Working length: 2000mm; Max spindle elongation: 300mm; Spindle rotation speed: 215-1000r/min(6steps); Spindle feed: 0.044, 0.167mm/r; Motor power: 0.75/1.1kw; Overall dimensions: 3900*800*1500mm; Model: T8115B*16 Boring diameter: 36-150mm; Max.Working length: 1600mm; Max spindle elongation: 300mm; Spindle rotation speed: 215-1000r/min(6steps); Spindle feed: 0.044, 0.167mm/r; Motor power: 0.75/1.1kw; Overall dimensions: 3500*800*1500mm; Model: T8108 Boring diameter: 24-85mm; Max.Working length: 800mm; Max spindle elongation: 100mm; Spindle rotation speed: 245, 380r/min; Spindle feed: 0.Stepless; Motor power: 0.55/0.75kw; Overall dimensions: 1600*750*1375mm