Upgrade your mountain bike brakes with the Jagwire Mountain Pro Rim-Brake Pads. These bike brake pads are easy to install with threaded posts, plus the cartridge-style replacement inserts make them easy to swap when they get worn down. The dimpled design reduces squealing on those big-time descents, and the all-weather compound delivers reliable performance in wet and dry conditions.Manufacturer model #: JS91AC. Threaded posts for easy installation Replaceable inserts let you easily swap for new Dimpled design reduces brake noise All-weather compound excels in both wet and dry conditions