The 4-42-60 Stretched ESPA from MOOG is a Secondary Payload Adapter that is designed for SmallSats. It has a payload capacity of 700 kg and an adapter mass of 211-286 kg. This flight-proven adapter supports launch vehicles such as Atlas V, Falcon 9, Delta IV, OmegA, Vulcan, and New Glenn. It has 4 ports and the bolt size measures 0.25 inch (6.35 mm). This space-qualified adapter has a ring height of 60 inches and a port diameter of 24 inches.