Victaulic® Vic-Flange® Flange Adapter, Series: 641, 2-1/2 in Nominal, Grooved x Flange, 7 in Flange Dia, 5-1/2 in Bolt Circle, 4 Bolts, 5/8 x 3 in Bolt, 7.88 in Length, 0.88 in Thickness, 300 psi, -30 to 230 deg F, Ductile Iron