Snap ring pliers are specialized tools designed for installing and removing snap rings, which are circular fasteners used to secure components on shafts or in housings. These pliers come in various designs, including internal and external types, allowing users to work with different snap ring configurations. The pliers typically feature pointed tips that fit into the holes of the snap rings, providing a secure grip. By squeezing the handles, the user can expand or compress the snap ring, making it easier to place or remove it from its designated groove.