supply of backing ring for ctrb class e 6 x 11 (narrow jaw) drg. no.wd-92089-s-01 alt-1backing ring for ctrb class e 6 x 11 (narrow jaw) drg. no.wd-92089-s-01 alt-1,backing ring for ctrb class e 6 x 11 (narrow jaw) drg. no.wd-92089-s-01 alt-1, i tem no-9 spec. drg. no:- wd-92089-s-01 alt-1, item no-9 spec. no: ab/rb-39-2002 ( rev.4) of fe b 2018 with amendment no.3.timken part nos. k150050.backing ring without vent hole for ctrb 6x 11.timken part no. k150050. [ warranty period: 48 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitt ed: max 8 lacs ] ]