WTB KOM Light i21 TCS RimIf you want to get as much fun as possible out of your off-road adventures, you're going to want this super-lightweight mountain bike rim from WTB. The stiff alloy rim construction ensures you have plenty of durability and control, so you can handle any rough terrain or steep slope that comes your way. The 4D spoke drilling helps remove lateral loading and disperse tension throughout the rim, resulting in a powerful rolling performance even over gravel. Plus, the TCS 2.0 technology ensures a simple tubeless installation process, so you can spend less time in the workshop and more time adventuring.Features:  Usage: Adventure / Gravel / Cyclocross  Rim: Alloy, Tubeless  Width: 21mm (inner)  Spoke Holes: 32  Weight: 411gTechnologies:UST Tubeless Ready: The UST concept improves traction, control and comfort while reducing inertia and flats.  TCS 2.0 Technology: This refined version of the “Tubeless Compatible System” offers the same high performance, lightweight mountain bike rim structure, but is now easier to install and more dependable.Buy WTB Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.