The ball bearing is a standard hardware part with multiple applications on various lawn and garden machines. The bearing is typically used in a position where it can reduce friction between two rotating components. This exposes them to constant wear, heat, vibration, friction, and pressure, causing them to wear out and become a part of routine maintenance for many machines. In the event that ball bearings fail, they will typically affect the operation of whatever they are attached to, or they could create squealing noises or other sounds from the machine. A prompt replacement with this genuine ball bearing will prevent the risk of further damage. This genuine OEM replacement part is manufactured by Murray and designed to work with more than 150 snowblowers and tractors from Snapper, Simplicity, and Murray. Buyers should check their owner's manual for the location and application of this ball bearing. This is made of durable metal and sold individually. Those who need several bearings will have to buy multiple quantities. Pliers and a screwdriver are required to complete the repair.