Deep groove ball bearing RLS,long life and low noise 1.High precision & quality 2.ISO 9001 certified 3.Stable in chemical Deep groove ... ball bearing RLS,long life and low noise Material: chrome steel ... -1 (P0), ABEC-3 (P6), ABE C-5(P5)4) Noise Level: Z2V1, Z3V2 , Z4V35) Application: Caster bearings, Home Appliance bearings ...