- These Mastercool heavy duty hoses are extremely durable and stand the test of time
- Knurled brass nuts make finger tightening easy
- All hoses are available in sets and individually
- Sets include one yellow, one red, and one blue hose
- Tested for working pressure of 750 PSI and burst pressure of 3000
with 8 segment dies for secure fit and maximum durability. Mastercool's nylon
barrier models meet or exceed EPA, SAE and UL standards for containment of
refrigerant. Mastercool standard hoses are great economical alternative.