Mixed FL38/52 Max WheelsetsThe FL Max disc wheels are UCI approval. It features the DT like Ratchet System for top level, high performance cycling. These carbon fiber wheels are equipped with S&S bearings for superior durability and smooth riding. Experience the best in cycling with FL38 52 Max mullet wheelsets. Specification Type Carbon Disc Wheelset Rims Front: Superlight FL38 Max Rear: Superlight FL52 Max Material 100% Carbon Fiber Toray T700 & T800 Size 700C Rim Drills: 24