supply of set of tpu ring for primary suspension in ac & nac lhb coaches consisting of 02 (two) items as per rdso drg. no. cg-20049 alt.1 . one set consist of 01 (one) no. inner ring & 01 (one) no. outer ring. [ warranty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitt ed: max 8 lacs ] ]