Items - Set of Provision of Trap Chamber for collecting coal/dust particles in HHP Locomotives as per RDSO modification sheet no. MP.MOD.BK.01.03.21, Rev.00 dated 23.03.2021. One set consists of 03 items as per details following: (1) Female Tee with Union On One side only, Size 1-1/4 inch, Qty. 01 No./set (2) 2 inch long female connector of size 1-1/4 inch, Qty. 01 No.set (3) Hex head Plug of 1-1/4 inch, Qty. 01 No./set.