The Mo-Clamp Baby Box Clamp - 0670 is self-tightening. Great for single-lip flanges and inside frame horns.Original wedge; cross- hatch tooth design; spring-loaded for easy opening. Throat clearance of 1½" high (38 mm), 1¼" deep (32 mm).
Gripping Surface: 1¾" wide (45 mm), 1" deep (25 mm)Overall Length: 9½" (241 mm)Weight: 7 lbs (3.18 kg)Capacity: 5 tons (4,536 kg)
Heat Treated Steel.