Stans D Series Flow 29" Disc Rim. Features: Found as OE on builds, the Flow D is a value-driven all-mountain rim designed to handle anything you can throw at it Pinned construction creates a durable and affordable rim Patented Bead Socket Technology for the most reliable tire retention and easiest tubeless setup Rim profile optimized for 2.35" - 2.80" tires Specs: Size:29" Internal External:29/32.7mm Holes:32h ERD:604mm Color:black Weight:634g