supply of set of front & back ferrule stainless steel for lhb coaches in different size consisting of six itemsset of front & back ferrule stainless steel for lhb coaches in different size consisting of six items,set of front & back ferrule stainless steel for lhb coaches in different size consisting o f six items as item no.-01 , single ferrule size -28 mm od qty.-03 nos., item no.-02 as front & back ferrule size - 1 od qty.-03 nos. , item no.-03 as front & back ferrule size 3/4 od qty.03 nos., item n o.-04 as front & back ferrule size 22 mm od qty.03 nos, item no.-05 as front & back ferrule size 1/2 od qty.02 nos. item no.-06 as front & back ferrule size 10 mm od qty.02 nos. nabl certificate for ss 304. all ferrule should be of ss304 material. (one set is equal 16 nos.) specn: nabl certificate for ss3 04. all ferrule should be of ss304 material. [ warranty period: 30 months after the date of delivery ] ] => limited