supply of poh kit for air pipepoh kit for air pipe,poh kit for air pipe coupling confirming to rdso specn. no. 61-b-36/rev.68-1, with amnd. slip no. 1 of october-2016 consistin g of 04 items. [item-1]. rubber tube to schaku drg no-13-088-03-15(4), escorts drg no-sk 763 or equivalent, quantity-01 no. [item-2]. spri ng to schaku drg no-13-088-03-14(4), escorts drg no-sk 762 or equivalent, quantity-01 no. [item-3]. sleeve to schaku drg no-13-088-03-13 (4), escorts drg no-sk 761 or equivalent, quantity-01 no. [item-4]. sealing ring to schaku drg no-13-088-03-16(4), escorts drg no-sk 764 o r equivalent, quantity-01 no. [ warranty period: 30 months after the date of delivery ] ] => limited