This air hose fits Mack applications and is sold as a single unit, built as a replacement for the OEM hose it matches. It routes compressed air between system components like the compressor, tanks, valves, and brake chambers to keep the brakes and other pneumatic accessories functioning. No additional hardware is included beyond the hose itself.Interchanges:Mack 42QE2116P1MAC-4171FeaturesAir Brake Parts componentSold pack quantity: 1 eachTech SpecsSell pack: 1 EACH