supply of poh kit for air pipe coupling consisting of 04 items.poh kit for air pipe coupling consisting of 04 items.,poh kit for air pipe coupling consisting 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]. spring 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-1 3-088-03-13 (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 or equivalent, quantity-01 no. [ warranty period: 30 months after the date of delivery ] ]