The FK rims have a 40-mm profile and acceptable weight, with stainless-steel spokes, ball bearing hubs and double aluminium walls. This rim have a machined braking wall and compatible with mounting brakes. The DP18 model is competitively priced. The size is 700c, meaning it is compatible with all road-bike tyres. You can mount 23, 25 or 28 tyres and will need a 60mm-valve inner tube. And it is crucial you mount a rim strip between the tyre and the inner tube to reduce or prevent punctures.