New old stock surplus item from industrial inventory. Gruvlok 0390000420 is a 8 in nominal flexible grooved coupling for grooved end pipe, built in ductile iron with an EPDM gasket. This Fig. 7000 lightweight coupling is straight configuration, lead-free, and finished in rust-inhibiting orange paint. It is rated to 500 PSI and includes (2) 3/4 in x 4-1/2 in coupling bolts for installation on compatible grooved end pipe systems.