Cixi Wangd Rubber And Hardware Products Factory is one of the leading hitachi upgrade o ring kit manufacturers equipped with professional factory,Website:http://www.wangdaoring.com, welcome to check hitachi upgrade o ring kit price with us and buy customized hitachi upgrade o ring kit from us.Product:Hitachi O Ring Kit Upgraded VersionDescription:1) Model No.: NBR 90 Hitachi O Ring Kit Upgraded Version2) Material : NBR(FKM, EPDM, MVQ,Silicone available)3) Color of o-ring : black or customized color.4) Color of box : transparent, blue, yellow,red,green or customized color.6) MM standard7) 40 sets per one carton.