The Astral Leviathan and Leviathan Disc are tough, modern touring and tandem rims equipped with tubeless technology designed for the heavier duty haul. This is a great option for larger riders or anyone who wants a beefier build without adding a lot of extra beef. The Leviathan shares its 32mm deep aero profile with the Radiant to deliver improved aerodynamics and ride comfort. Drilled for external nipples and available for disc or rim brake use. All Astral rims are designed and manufactured by Rolf Prima in Bend Oregon. Astral rims are Tubeless Easy compatible for tire installation that can be set up with a floor pump in most cases.