6903ZZ Deep Groove Ball Bearings Z2 17x30x7mm Double Shielded Carbon Steel NEW
6903ZZ (I.D.=17mm, O.D.=30mm, Thickness=7mm). ABEC Tolerance 1 (P0), Z2 Noise Level for most general use. 6903-2Z bearings are shielded on BOTH SIDES to keep lubricant in. Made from Carbon Steel, durability and resistance to under heavy loads.