Model=S6003-2RS, Inner Dia.=17mm, Outer Dia.=35mm, Thickness=10mm Bearings are sealed on BOTH SIDES to keep lubricant in Made of 440C Stainless Steel, features with stronger rust and corrosion resistance ability ABEC Tolerance 1 (P0), Z2 Noise Level for most general use Static load rating of 2930N and dynamic load rating of 5400N; Limiting Speed (Oil): 22500rpm