Armstrong 68-071 1-1/2" to 4" Retaining Ring Pliers, Internal/External Convertible For Use with Internal or External Retaining Rings Spring Loaded Handles Speed Operation Plus Ratcheting Mechanism to Help Control Large Retaining Rings Replaceable Tips Are Locked Into Place with A Set Screw For Shafts & Bore Diameters From 1-1/2" to 4"