Description:Cat quick disconnect couplers are held to the highest standards of quality, reliability and durability. These quick disconnectors are manufactured to exacting tolerances to ensure leak free connections. Each quick disconnector is designed to meet or exceed industry standards, where applicable, for operating pressure and corrosion protection to ensure a long life and proper machine functionality.Attributes:• Steel coupling with o-ring• Thread size: 1-7/16-12 (Male)• Hex Size: 46 mm• Interchange Type: ISO 16028• Interchange Size: 19• Mating Part: 550-0923 (not included)Application:Quick disconnect couplers allow for quick coupling and uncoupling of fluid carrying hoses and tubes in order to change implements on a machine or perform regular maintenance functions that require the connection or disconnection of fluid carrying lines. Consult your owner’s manual or contact your local Cat Dealer for more information.