Three pack of 5' premium 1/4'' ABB hoses. The anti-blowback valve (ABB) prevents any refrigerant loss when disconnecting hoses from fittings, eliminating harmful refrigerant burns. R-410A Compatible. Meets or exceeds SAE J2196 standard. Compatible with CFC, HCFC and HFC refrigerants & blends. Extra deep knurling on nuts for easy grip.