The Lang Tools 2-pc Internal/External Retaining Ring Pliers Set, No. 1487, features a spring ratchet locking mechanism that securely holds against snap ring tension, a thumb release allowing for smooth and controlled tension release, and a cushion grip for comfort. The internal ring size ranges from 3-1/16" to 6-1/4", and the external ring size ranges from 3-1/2" to 6-1/2". The pliers set includes with two sets of replaceable tips (size .120") that come in straight, bent 45-degree, and bent 90-degree angles.