rubber nuts M4,M6,M8,M10,M12,1/4",5/16",3/8",7/16",1/2" Screw rubber nuts 1) Materials: NR/SBR, + Metal nuts2) Characteristics: high/low temperature-resistant, wearing-resistant, tear-resistant, pressure absorb3) Specification:a) Standard and Nonstandardb) Different sizes and structure available4) Colors: different colors availableWe can produce according to your samples or drawings.