Wheels using the Duroc 37 Super Duty rim, a double wall rim with 2.7mm thick bead hooks. Contructed of 6061 Series Alloy with a welded seam. SRX Cartridge bearing straight pull hubs with a 3 pawl alloy cassette body and 24 tooth ratchet ring, yielding 72 engagement points. Includes tubeless tape, valve and 2oz bottle of STR sealant. *Rear wheel includes both HG and XD driver bodies. Wheels using the Duroc 37 Super Duty rim, a double wall rim with 2.7mm thick bead hooks Contructed of 6061 Series Alloy with a welded seam SRX Cartridge bearing straight pull hubs with a 3 pawl alloy cassette body and 24 tooth ratchet ring Includes tubeless tape, valve and 2oz bottle of STR sealant *Rear wheel includes both HG and XD driver bodies