STYLEVIPER WIDTH:7 1/4" ATTACHMENT:7/16" BOLT (2) Detailed product description:1.ISO9000 Certificate2.SGS Certificate3.Lower price4.Short delivery time5.Many types to choose6.Package:carton box or wooden or iron case7.Material: spring steel 28MnSiB or 60Si2Mn8.Thickness:3-8mm9.Hardness: HRC44-4810.Hole size:Full size11.Coating:stoving varnishWe accept OEM and ODM order ,and offer high-quality ...