Centers: 4", Length: 4-1/2", Width: 5/16", Projection: 11/16"Centers: 6", Length: 6-1/2", Width: 5/16", Projection: 11/16"Centers: 8", Length: 8-1/2", Width: 5/16", Projection: 11/16"Centers: 10", Length: 10-1/2", Width: 5/16", Projection: 11/16"Centers: 12", Length: 12-1/2", Width: 5/16", Projection: 11/16"Centers: 18", Length: 18-1/2", Width: 5/16", Projection: 11/16"Material: Solid BrassIncludes mounting hardware