6904ZZ Deep Groove Ball Bearings Z2 20x37x9mm Double Shielded Carbon Steel NEW
6904ZZ (I.D.=20mm, O.D.=37mm, Thickness=9mm). ABEC Tolerance 1 (P0), Z2 Noise Level for most general use. 6904-2Z bearings are shielded on BOTH SIDES to keep lubricant in. Made from Carbon Steel, durability and resistance to under heavy loads.