supply of semi permanent coupler , semi permanent coupler end a conforming to rdso specn. no. 61-b-36/rev.02, feb-2025 and to m/s escorts make drawing. no. sk-750 consisting of 5 items 1. intermediate tube to escorts drg. n o. sk-754 2. air pipe coupling (complete) to escorts drg. no. sk-198 3. draw and buff gear to escorts drg . no. sk-752 4. adjustable cup sleeve to escorts drg. no. sk-755 5. centering device (sub-assembly) to e scorts drg. no. sk-756 or m/s wsf make or m/s sanrok enterprises make or equivalent rdso approved make for emu/memu application. [ warranty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted : max 8 lacs ] ]