The Arch D rim has 26.0 mm internal width / ~29.3 mm external width for the 29″ version. The hubs are center lock for Shimano. They came on my Kona Libre DL back in 2020 or 2019. They are in absolutely excellent condition. You can hardly tell they were ever even ridden on. They are 12mm x 100mm Front and 12mm x 142mm Rear. Wait on the front wheel is 960 g rear wheel 1195 g.