adjustable cup sleeve for schaku coupler of emu coaches to i m s escorts drg no 40 317 13 2 ii m s wsf s drg n o 40 317 13 2 iii m s sanrok s drg no 2ed 181 1005 or equivalent approved vendor drawing rdso s spec no 61 b 36 rev 68 1 wi th amendment no 1 of october 2016 warranty period 30 months after the date of delivery adjustable cup sleeve for schaku coupler of emu coaches to i m s escorts drg no 40 317 13 2 ii m s wsf s drg n o 40 317 13 2 iii m s sanrok s drg no 2ed