The Quill is our most innovative road rim to date. Utilizing design technology from our Aileron disc rim, we've evolved our most successful and proven A23 road rim and developed the Quill to be lighter, stiffer, and wider than its predecessor. The Quill rim comes in at 415 grams, the Quill is 35 grams lighter than the A23 while also being 17.2% wider internally, 12.6% laterally stiffer, and 78.5% radially stiffer.* Featuring an outer width of 24.5mm and an internal width of 21.1mm, the Quill's voluminous width provides riders with substantial lateral stiffness even in lower spoke counts and increased ride quality and control. With its matching 24.5mm depth, the aero profile provides significant performance and durability gains over previous rim brake models. The Quill can easily be set up tubeless with the use of our 21mm wide Velotape. Tight tolerances require the use of a low profile rim tape like Velotape to avoid tire installation issues. Veloplugs are not recommended on Quill rims. External width of 24.5mm and an internal width of 21.1mm Provides substantial lateral stiffness even in lower spoke countsand increased ride quality Can easily be set up tubeless with the using 21mm tape 415 grams