supply of 05 meter long air hose with both side female connection of 3/4 inches (20mm bore)05 meter long air hose with both side female connection of 3/4 inches (20mm bore),supply of 05 meter long air hose with both side female connection of 3/4 inches (20mm bore), for enroute attention in lhb coaches same as rdso drawing no. sk 1054, (except hose length) alt. - nil, item no .1 and conforming to rdso spec. no. c-k 407 rev. 3, amdt.1 sept - 2018,. hose shall confirm to sae 100 r3, w.p - 52 bar / 754 psi, flame resistance. note: sample must be approved by the consignee before bulk suppl y. material test certificate will be submitted by supplier. [ warranty period: 30 months after the date of delivery ] => limited