Resilient Ring Mounting Base, Compatible Motor Diameter 5.6 in, Compatible Ring Diameter 2 1/2 in, Compatible NEMA Frame Size 48, Mounting Bolt Hole Spacing Length 1 3/4 in, 2 3/4 in, Mounting Bolt Hole Spacing Width 4 1/4 in, Ring-to-Ring Distance 7 3/16 in, Includes (2) Clamps, Gray Color, Overall Height 3 3/8 in, Overall Length 7 5/16 in, Overall Width 6 in