supply of set of items for axle boxset of items for axle box,set of items for axle box brush holder primary return current assembly. set consists of 3 item s as follows. 1) spring clip (pressure device) for axle box carbon brush of 3 phase locos as per ref.2 of shee t no. 8 of clw spec. no. clw/es/3/0017 alt-c - 12 nos. 2) insulating bush small for earth return brush with brush holder assembly as per clw spec. no. clw/es/3/0017 alt- c ref. item no. 03 of sheet no.08- 40 nos. 3) insulating bush large for earth return brush with brush holder assembly as per clw spec. no. clw/es/3/0 017 alt- c ref. item no. 04 of sheet no.08---40 nos. to be procured from clw approved source only. [ warr anty period: 30 months after the date of delivery ] ]