... .They have characters below Tong Xiang metal material Co., LtdProductClampMaterialCarbon steel,stainless steelStandardISO,DIN,SMS,IDF,3ACertificationISO9001Sizeany size availableTypeSuspension clamp,spring clamp ... .Delivery timeAccording to the detailed information T bolt hose clamp, stainless steel hose clamp, hose clip