Material - Made of steel; All working parts accuracy ground and hardened.
Design - Rigid wedge tool post design, easily centered.
Style 1: Boring and facing. Style 2: Boring turing and facing. Style 4: Boring, heavy duty. Style 7: Universal parting blades. Style 10: Knurling, facing and turning.
Turning: Insures smoother turning without chatter or vibration; Drilling: Set enables you to drill by power feed with your carriage, instead of hand operation or tailstock.