Bar Clamp/Spreader Bar Type Profiled Rail Handle Style Sliding T Clamping Capacity 79 in Clamping Force 1 450 lb Throat Depth 4 3/4 in Jaw Pad Type Swivel Sliding Mechanism Bar Slide Bar Thickness 1 1/16 in Bar Material Steel Function Clamping or Spreading Handle Material Wood Spreading Capacity - Maximum 93 in Spreading Capacity - Minimum 14 in