SUNringlé Düroc 30 JUNIT wheels the same ride quality, and performance functions built for adult riders, now optimized for kids. Offered in both 20” and 24”, Düroc JUNIT are high-quality, tubeless ready wheels for kids. They’re built using Wheelsmith spokes and nipples as well as SUNringlé SRC hubs and cartridge bearings. Outer rim width is 30mm followed by a 26mm inner bead width and 28-hole count. The wheel development team applied our experience designing rim extrusions, as well as applying SUNringlé Tubeless Ready (STR). Utilizing using our experience with metallurgy, we selected the ideal materials.