These deep-wheels are a size 700 with a 43mm rim depth front and rear. Each wheel features Quando 32H x 14G hubs; the rear is a flip-flop hub with a 16T (16 tooth) fixed cog only. Additionally, each wheel features a high-quality nylon rim strip to protect tubes from punctures. The hub spacing for the front and rear wheels are 105mm and 120mm, respectively. We recommend a 700x23c road tire with presta valves for all State Bicycle wheels.