Constant Contact Side Bearer Assembly ( Spring loaded type ) for BOXNS Wagon. Drawing No.: RDSO ' s Drg. No. WD- 12008- S/ 1 Alt- 03 ( Assembly Drg. No. WD- 14014- S- 07, Alt. 4, Item No. 13 ) Material and Specification: As Per Drawing and conforming to RDSO ' s Spec. No. WD- 62- MISC. 17, Amendment Slip No. 1 of Sept. 2021.