Product Description Mastercool Part Number 40336 Charging Hose Set. Included is (3) 36" hoses with 1/4" female flare ends. Hoses have standard 1/4" female flares on both sides. Knurled brass nuts make finger tightening easy. Crimped with 8 segment dies for secure fit and maximum durability. Standard Hoses, Working Pressure 600 PSI, Burst 3000 PSI. Not made for R410A