Cedrus classic adapters are precision-machined from 6000 series aluminum and ship with M8x40mm A4-80 stainless steel hardware. These legacy adapters are compatible with Cedrus Carbon Classic, Clydesdale, Aluminum masts, and the original Foil Drive Integrated masts. These adapters do not feature press-fit pins and are not compatible with Evolution masts. Adapters do not include hardware to connect your fuselage. Ensure adequate thread engagement with the adapter when connecting your fuselage. Use only the supplied stainless hardware to connect your adapter to your mast. Do not use titanium hardware which despite higher strength, has lower ductility and can fracture in the event of damage.