10 Pcs 46mm x 54mm Round Shape Metal External Snap Retaining Ring Product Name : External Retaining Ring;Fit for : H2306 Bearing Inner Dia : 46mm/ 1.8";Outer Dia : 54mm/ 2.1" Hole Dia : 3mm/0.12";Thickness : 2mm/ 0.08" Material : Metal;Color : Gray Weight : 93g;Package : 10 Pcs x External Retaining Rings