The 3 Pack of CCLS-72 1/4" X 72" Red/Blue/Yellow KOBRA High Pressure Hoses are Designed with a Secure Seal Fitting that Opens to Full Flow and an Internal Structure that Automatically Traps Refrigerant Discharge in the Hose, Significantly Reducing Blowouts. The Gasket Features a Hood with a Straight Edge that Snaps into the Straight Edge of the Barb. This Straight Edge to Straight Edge Force Eliminates Gasket Blowouts. The Depressor is Barbed and Locks into the Gasket, meaning the Outward Force on the Depressor Pushes the Gasket Further into Place, Resulting in no Blowouts. Kevlar Construction makes the Hose Strong and Flexible, while the Nitrile Cover Extends the Life of the Hose Better than Neoprene