The cyclocross and gravel oriented Grail MK3 from Stan's NoTubes is a lightweight yet sturdy rim design made with resilient 6069 aluminum. The internal rim width and patented Bead Socket Technology road rim design are optimized for 25-40mm tires according to NoTube's WideRight framework. The rim itself features a 20.3mm internal width, with a 24mm external measurement and a 24.5mm profile height for a well balanced, stable, and strong hoop. All the advantages the Grail MK3 offers on the road are even more noticeable once the pavement ends. For cyclocross and gravel racing, the optimized tire shape and added stability offer a distinct advantage. The Grail MK3's rim shape is even designed to avoid tire pinch flats, allowing cross and gravel racers to run lower pressures that absorb impacts and improve traction.