A Clamp

The A Clamp grips narrow seams and ridges where wider clamps can't hold.
Hardened steel cross-hatch teeth assure a secure pull.
Excellent for use with a slide hammer.
Raised bolt stoppers hold bolts stationary for easy one-handed tightening.
Use only with 1/4" chain.
Gripping surface: 1-1/2" wide (39 mm), 3/4" deep (19 mm).
Overall length: 3-1/2" (89 mm).
Weight: 2 lbs. (0.91 kg).
Capacity: 3 tons (2,722 kg).
Heat-treated steel.
Made in the U.S.A.