tender for kit for constant contact polyurethane side bearer pad design.b of rdsospec.wd-38-misc-2004,rev.1 of jan.08 and amendment no.2 of sep2016 for casnub 22nlbbogies consisting of 3 items to firms drg.no.aal-021101/n,alt.1. sl.no.1.poly rings itemno.5 - qty/kit-2 nos., sl.no.2 .round plate(steel spacer) with stopper spring itemno.3&6 - qty/kit-1 no., sl.no.3.pu lining (sleeve) item no.4 - qty/kit-2nos.