1. This Vise is so designed that the horizontal force generated by tightening the handle pushes the semi-sphere within the movable jaw and thus thrusts the
movable jaw downward.The workplace does not move up, even if it is held at the top of the jaw plates
2. Comes with swivel base, easy to read 0 to 360 degree scales
3. Four setting positions of the jaw plates are available, widening the jaw plates opening
4. Highest clamping power. It's very accurate and durable
5. The enclosed lead screw and sliding surface are hardened and ground
6. Use highest quality ductile Iron 80000 PSI for minimum bending