Williams PL-1606 6-Piece Combination Internal and External Snap Ring Pliers Set 6-Piece set Cushioned grip handles Pliers are convertible for use on internal and external snap rings Knurled center screw with spring for easy changing and secure hold Included in this set are the PL 1620, PL 1622, PL 1623, PL 1625, PL 1626, and PL 1628