Machine Vise Spindle Quick Release Fixed Base Jaw Width (In.) 3 1/2 in Jaw Opening (In.) 4 in Throat Depth (In.) 1 3/4 in Overall Length (In.) 11-1/2 Overall Height (In.) 3 Clamping Force (Lb.) 450 Jaw Deflection 0.010 in At 33 lb Jaw Plate 0.004 in Bed/Base 0.004 in Can Be Used on Base or Sides One Turn of the Vise in Counter Clockwise Direction Makes the Spindle Quick Release