Locking pliers have a biomechanical advantage because you don’t have to waste any muscle power holding the jaws shut. You adjust them to firmly grip the item, clamp them shut, then focus all your effort on twisting.

Stanley FMHT0-74886 250 mm Fatmax Locking Mole Grip Curve Jaw Pliers - Black
5.0

SATA ST71102ST 7-Inch Curved Jaw Locking Pliers with Induction-Hardened Angled Teeth for Increased Gripping Power
5.0