Motor Mounting Base Compatible Motor Diameter 5 in Compatible Ring Diameter 2 1/2 in Compatible NEMA Frame Size 42 Mounting Bolt Hole Spacing Length 1 3/4 in Mounting Bolt Hole Spacing Width 4 1/4 in Ring-to-Ring Distance 4 7/8 in Includes (2) Clamps Gray Color Overall Height 2 15/16 in Overall Length 5 in Overall Width 6 in