A-B17010776YP-AI RING, 1/2 RETAININGOne New Aftermarket Replacement 1 2" External Retaining Ring Fits Briggs & Fits Stratton, Snapper, and Murray Equipment This 1 2" external retaining ring secures components onto a shaft by seating in a machined groove, where the exposed portion acts as a shoulder to retain assemblies in place. It is a heavy duty snap ring used across a wide range of Fits Briggs & Fits Stratton powered lawn and garden equipment, including Snapper and Murray mowers.