Enve 5.6 rims for road cyclists looking for an optimal rim brake wheel build. The SES 5.6 is the evolution of the proven SES 4.5. By implementing the latest SES technologies, the SES 5.6 is not only faster than its predecessor, but also more stable and confidence inspiring in challenging wind conditions. Other changes include tubeless tire compatibility for improved traction, rolling efficiency, and less flat tires. CLINCHER FRONT REAR WHEELSET Rim Weight 489g 513g 1002g RIM SPECS FRONT REAR Depth 54mm 63mm Internal Width 20mm 20mm External Width 29mm 28mm Hole Count 20 24 Effective Rim Diameter 548mm 532mm Aero Optimized Tire Size 25c 25c Tubeless Compatible? Yes Yes