supply of supply, installation and commissioning o [supply, installation and commissioning of rake test rig complete along with trolley , supply, installation and commissioning of rake test rig complete along with trolley & flexib le hoses each 3 mtrs. long with coupling to connect compressed air line, fp & bp pipe of coach to rig (02 no s. each - 01 as rig component, 01 as spare), suitable for twin pipe graduated released air brake testing of b g coaches as per testing procedure in indian railway, technical specification: rake test rig (rtr) equivale nt to escort drg. no - 3kb 3032, confirming to rdso specification no. 02-abr-02 with latest amendments make/brand: universal or similar [ warranty period: 30 months after the date of delivery ] ]