uxcell 100 Pcs 12mm Outside Dia Rubber Washers O Ring Oil Seal Gaskets Set Product Name : Oil Seal O Ring Set;Material : Rubber External Diameter(Approx.) : 12mm / 0.47";Inner Diameter(Approx.) : 7mm/ 0.28" Thickness(Approx.) : 2.6mm/ 0.1";Rubber Washers Size : 19 x 13 x 2mm/0.75''x 0.5''x0.08''(OD*ID*H) Color : Black;Weight : 37g Package Content : 50 x Oil Seal O Rings,50 x Rubber Washers