Frame Rack Jaws w/NBSW

The Frame Rack Jaws provide a heavy-duty clamping surface with recessed pockets to hold bolts stationary for easy tightening.
Gripping surface: 4" wide (102 mm), 3/4" deep (19 mm).
Overall length: 5" (127 mm).
Weight: 8 lbs. (3.63 kg).
Capacity: 6 tons (5,443 kg).
Heat-treated steel.