The Mo-Clamp Big Mouth Clamp - 0680 is self-tightening. A perfect solution for hard-to-get-to areas. Great where large opening is needed. Original wedge; cross-hatch tooth design; spring-loaded for easy opening. Throat clearance of 2¼" high (57 mm), 1¼" deep (32 mm).
Gripping Surface: 1¾" wide (45 mm), 1" deep (25 mm)Overall Length: 9½" (241 mm)Weight: 8 lbs (3.63 kg)Capacity: 5 tons (4,536 kg)
Heat Treated Steel.