The Extra Caffeinated Oval An oval that packs a punch. Larger than our classic Ultra O, it shares the same stable loading characteristics but with more volume when required. This addition to our oval connector range means we now have the compact PerfectO, the industry standard Ultra O and the larger AmericanO. The AmericanO is also DMM's first ANSI (American National Standards Institute) compliant true oval connector. It is especially suited for industries that apply this standard. A DMM oval for all applications.