6" Lockdown Milling Machine ViseDescriptionDimensions Jaw Width: 6"Jaw Opening: 5.9"Jaw Height: 1-3/4"Weight: 70 LbsAccurate to 0.002" per 4" on squareness and 0.006" per 4" on parallelism without base and 0.008" per 4" on parallelism with baseVise Key: 15.875mm table slot width, 18.00mm base widthFeature- 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.-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 PSIPackage include:1 x 6" Precise Clamping Lock Vice