Spiralink 1/2" x 1/2" universal pump coupling with a unique spiral spring design that allows the pump to absorb start-up torque.

Spiralink 1/2" x 1/2" x 5/8" universal pump coupling with a unique spiral spring design that allows the pump to absorb start-up torque.

Spiralink 5/8" x 5/8" universal pump coupling with a unique spiral spring design that allows the pump to absorb start-up torque. Also includes a 1/2" sleeve for 5/8" x 1/2" applications.