Snap-on Industrial Brand JH Williams 6-Piece combination internal and external snap ring pliers set feature cushioned grip handles. All of these pliers are convertible for use on internal and external snap rings. The knurled center screw with spring for easy changing and secure hold. The snap ring pliers that are included in this set are the PL 1620, PL 1622, PL 1623, PL 1625, PL 1626, and PL 1628.