screw rubber feet 1.Matreial : NR SBR FKM EPDM ,silicone ... pvc bag with carton box 3.Certificate : ROHS, ISO screw rubber feet 1, Materials: NBR, silione, NR, FKM,EMPD ... your size.3, Different sizes of Oil Seal, Rubber Seal, Rubber Gasket, rubber bumper, etc.4, You could option the color ... you like on the screw rubber feet.5, We promise ...