The Topeak E-Type MTX beamrack is perfect for medium bike frames. It will allow you to easily install your saddle bag and even has a rear light and RedLite mounts integrated. The improved QR mecanism is now more secure and easier to use which means your belongings will stay in place whether you use it for MTB or heavy commuting. It can fit tubes from 25.4 to 31.8 mm and even includes two rubber bungees and safety reflector so that you and your things are safe. It integrated a top plate and side bar that accepts Topeak MTX series bags and other cargo. You can bring up to 9kg (20lbs) of essentials such as snacks, water, tool and repair kit.