NEW MSA Part No. 804588 SCBA High Pressure Hose Replacement Kit for MMR's (Mask Mounted Regulators). These contain 1) 488919 High Pressure Hose, 1) 495793 Gauge Line Hose, 1) 495762 Orifice Assembly, 1) 602991 Loctite. I have 16 of these available. Any questions send a message. Thanks Gary