Machine Vise, Self Centering, Swivel Base, Jaw Width (In.) 4 in, Jaw Opening (In.) 4 in, Throat Depth (In.) 1 1/2 in, Overall Length (In.) 10.24, Overall Height (In.) 4.73, Clamping Force (Lb.) -, Jaw Deflection 0.006 in Per 4 in At 33 lb Load On Hand Crank, Jaw Plate Square To 0.0012 in per 4 in, Bed/Base Parallel To 0.0012 in, 360 Degrees Swivel Base, Both Jaws are Movable Allowing for Accurate Centering of Jobs, Hold Down Slot for Secure Clamping