set of items for axle box brush holder primary return current set con sisting of 03 items as follows 1 spring clip pressure clip for axle box carbon br ush of 3 phase locos as per ref 02 of sheet no 8 of clw spec no clw es 3 0017 alt c or latest qty 12 nos 2 insulating bush small for earth return brush with brush h older assembly as per clw spec no clw es 3 0017 alt c or latest ref item no 03 of s heet no 08 qty 40nos 3 insulating bush large for earth return brush with brush holder assembly as