Sector GCa Gravel RimWhether you're taking the long road home or planning a countryside adventure with your friends, this versatile gravel rim is engineered for maximum performance. It features a hard-wearing aluminium rim construction, which makes it more than capable of handling all the intensity that comes with exploring new and unpredictable roads. Sector has also equipped this model with a 23mm internal width that's optimised for 30mm to 50mm tyres. The rim is both pinned and welded making it incredibly strong, and combining this with the wide profile, will withstand punishing 'Cross courses, all day Gravel epics or your next bike-packing adventure. The GCa is available in both 700c and 650b options. Features: Rim Material: 6061 T-10 Aluminium Use: Gravel, Adventure and Cyclo-crossRim Size: 700c & 650b options availableRim Depth: N/ARim Width: (Internal) 23mm; (External) 28mmHoles: 28hTubeless: YesSingle or Pair: SingleBuy Sector Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.