State Bicycle 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 and a 16T free wheel cog. Additionally, both wheels feature a high-quality nylon rim strip to protect tubes from punctures. Both front and rear wheels are machined for brakes. We recommend a 700x23c road tire with presto valves for all State Bicycle wheels. Also included are chain tensioners, which allow for easy adjustment to chain tension and wheel location. Also available are chain tensioners, which allow for easy adjustment to chain tension and wheel location. NOTE: Rear wheel has a flip-flop hub with a fixed cog only. As is, this wheel is only for fixed gear riding. If you wish to add a free wheel to this flip-flop hub, please select the free wheel option to make your rear wheel a true flip-flop wheel, requiring no additional tools or parts.