311P Sealed Deep Groove Ball Bearing311P Deep groove single row Radial Bearing 55x120x29 311P single row Radial Bearing 55 mm ID x 120 mm OD x 29 mm Wide. 311P single row Radial made from durable 52100 alloy steel, commonly known as chrome steel, each bearing has 2 Rubber seals to protect the bearing from dust or any possible contamination, this is self lubricated bearing (bearing is already greased) Item Sku : 311 P Quantity : One bearing Brand : VXB Type : Deep groove ball bearing