Weight: 5.9 lbs (1,540 g) (F: 2.5 oz (678 g) R: 3.9 oz (862 g) Rim Height: F/0.9 - 1.1 inches (24 - 27 mm) R/27 mm Rim Width: 0.9 inches (22 mm) ETRTO: 621 x 17 inches (6 inches (6 mm), Free body: Shimano 9/1111111S Steel bearings. Best Selling Zon Da has adopted the C17 rim and has been updated. The new 22.5mm wide rim allows you to mount thicker clincher tires and greatly improved performance, comfort, and efficient interfaces of the tire/rim. The traditional Zodas technology continues to take the same class of competition wheels apart from the weight. It achieved a wide rim performance and reduced at least 10 grams.