supply of inner coil spring for mk-50 draft gear ( item to be supplied with work test certificate) to besco drg no: item - 10, of fig 19 of besco manual, alt : nil.inner coil spring for mk-50 draft gear ( item to be supplied with work test certificate) to besco drg no: item - 10, of fig 19 of besco manual, alt : nil.,inner coil spring for mk-50 draft gear ( item to be supplied with work test certificate) to besco drg no: item - 10, of fig 19 of besco manual, alt : nil. [ warranty per iod: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitt ed: max 8 lacs ] ]