SPI Milling Machine Vises

• Made from FC25 fine grain cast iron.
• Trapezoidal thread lead screw.
• Removable base swivels 360 degrees.
• Replaceable hardened & ground jaw plates.
• Jaw surface square to 0.0015"
• Jaw deflection less than 0.001" at 4,000 lbs. clamping pressure.