87 01 250: Jaw capacity 2-inch round, 1 13/64-inch hex, 25 adjustment positions.
87 01 300: Jaw capacity 2 3/4-inch round, 2 23/64-inch hex, 30 adjustment positions.
Self-locking on pipes and nuts: no slipping on the work piece and low hand force required.
Gripping surfaces with special hardened teeth.
Pinch guard prevents operators' fingers from being pinched.