Machine Vise Milling Stationary Base Jaw Width (In.) 6 in Jaw Opening (In.) 8 3/4 in Throat Depth (In.) 1 3/4 in Overall Length (In.) 19-1/2 Overall Height (In.) 4-5/8 Max Travel 8-3/4 Jaw Deflection Less Than 0.001 in Jaw Plate Hardened And Ground Tool Steel Bed/Base Hardened And Ground 70000 PSI Ductile Iron Unique Dual Force Design Prevents Jaw Tilt1/2 Lb Downward Force for Every 1 Lb of Horizontal Forcefull 8 3/4 Inch Opening70 000 Psi Ductile Iron Castings