Long Universal Overhead Camshaft Engine Valve Stem Seal Remover Removal Pliers Valve Plier (top) used for the proper extraction of stem seals. The inside grooves on the tips of this Plier allows the firm grip of both O.E. and aftermarket seals Applicable: Most Overhead Cam engines Long neck designed to reach into confined area of the seal to grip it for removal. Gripping serration in the allow them to grasp both original equipment & aftermarket seals regardless of the configuration.