A-B11717056SM-AI BEARING-BALL 25MOne New Aftermarket Replacement Ball Bearing (25mm) for Simplicity, Snapper, and Murray Lawn Tractors This 25mm ball bearing (double sealed with snap ring) is used in the front wheel hubs of Simplicity, Snapper, and Murray lawn tractors and garden tractors. The snap ring seats against the outer hub to hold the bearing in position. Bearings in this location are subject to constant load and wear and typically require replacement as part of routine wheel