2MM ID X 5MM OD OPEN & FLANGED ball bearings. These bearings work nicely for ball bearing applications in motor endbells and cans. Bore Dia (d) 2.000 MM Outer Dia (D) 5.000 MM Flange Dia (Df) 6.100 MM Width (Ws) 1.500 MM Flange Width (Wfs) 0.500 MM Bearing Type Open Material Chrome steel Dynamic Load Rating (Cr) (Newtons) 144 Static Load Rating (Cor) (Newtons) 40 Max Speed 100,000 RPM Weight (g) (grams) 0.19