TheAdapterHoseKitDiameterEvacuatePurpleSDPcomesasapartofananesthesiadeliverysystem.Itconsistsofanadapterandahoseof0.25inches.Thehoseisusedtoevacuatetheexha ustgasfromtheBreathingCircuitGas(BCG).Theendsofthehosearecoveredbymeansofcapsnamedasferrules.Theyareprovidedtopreventtheendsofthehosefromsplittingandgetting damaged.Theyaremadeofbrass,whichishighlywearresistant.Theyhavezincplatingonthesurfaceswhichprotectstheferrulesfromoxidation.ThekitcomesasapartofmedicalequipmentsuchasAestiva/57100CompactConfiguration.