supply of wheel set earthing equipment sub-assemblies in set consisting of following items:(1) isolating bush as per rcf drg. no. lw71244, - 10 nos., (2) bracket as per rcf drg. no. lw71247, alt.-nil, 02 nos., (3)spring for cover for wheel set earthing housing as per rcf drg. no. lw71250, alt.-b, 01 nos.,(4)cover hinge tube for earthing brush assembly as per rcf drg. no. lw71253, alt. nil, 01 nos.,(5)cover pin for wheel set earthing equipment as per rcf drg. no. lw71254, alt. a, 01 nos., (6) o-ring of dia. 140x2mm of material: neoprene rubber, -02 nos. (7) o-ring of dia. 30x2mm of material: neoprene rubber, -02 nos. drawing no: as per description. matl.& specn : as per description.