Specifications: Material: Toray T700 Full carbon Type: Clincher tubeless compatible & Hookless Rim depth: 32mm External width: 40mm Internal width: 31mm Brake system: Disc brake Application: Down Hill (DH) Weight: 520±15g ERD: 511.5 BSD: 559 Spoke Hole Dia: 4.3mm Assembly Hole Dia.: 7.5mm Valve Hole Dia.: 6.5mm Lead time: 5-15 days Standard: En Standard Design characters: Ø Hookless: By getting rid of the hook from the top of the rim sidewall, the rim wall became smooth and straight, it is easy to install a tire, and the tire and rim will work perfectly to create a seal. So riders are allowed to run lower tire pressure without the risk of air loss or pinch flats. Ø Tubeless compatible: this allows to run tubeless perfectly, makes wheels superlight. Ø Filled with 3D weave, that will make the rim stable, safe and durable. Ø The thicker rim lip makes it stiffer and stonger to resist fierce impact.