Check the listing for details. 3" × 2.95" Lock Down Precision Milling Machine Vise Without Base High Precision. Condition: New, Made in United States. Listed at 49.53 USD. Description: Each pound of force in horizontal induces 1/2 lb of downward force, eliminating jaw tilt. 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. Highest clamping power. It's very accurate and durable Sliding surface of the vise bed is flame hardened and ground Vise bed is made from grey cast iron and the maximum tensile strength of the vise bed is 28,000 PSI With anti-jaw lifting mechanism. K type angle lock nut is made from the highest quality ductile Iron, firm and durable .