The Berd Sparrow Carbon Gravel Wheels are the lightest 25 mm internal production gravel wheelset on the market today! Even though Sparrow wheels weigh only 1,029 grams for the complete 24 spoke wheelset (1,074 grams with tape and valves) they are still tough enough to handle anything your off-pavement adventures can throw at them. Not only are Sparrow wheels lightweight, but they also provide an extremely smooth ride with the damping qualities of Berd spokes soaking up those chunky gravel sections and reducing the high-frequency vibrations that travel from the road to the rider. The Sparrow Wheels are equipped to handle 28c road tires all the way up to 50c mud slingers so no matter where you are going and how you are riding, you can mount up whatever rubber is needed for the adventure! At the center of the Sparrow wheels are the Berd Talon Gravel and Road hubs. Berd TALON hubs feature a clean spoke interface designed to work exclusively with Berd spokes. The TALON hubs also include removable end caps for easy serviceability, centerlock brake mounts, and a durable black anodized finish. The dual-sprung 36 tooth ratchet mechanism is designed to be easy to service and offers excellent reliability! Most importantly, the Talon Gravel/Road hubs are available with Shimano Microspline freehubs for 12-speed GRX cassettes in addition to Sram XDR and the traditional Shimano 11SP road freehub body.