Planet Bike's Eco Rack is made of oversize tubular 6061-aluminum for maximum strength and stability. It's designed to provide complete heel clearance when you install packs. And, the pre-installed rack hardware makes it a cinch to mount the Eco Rack to your bike, too. This rack fits most road, mountain and hybrid bicycles and even includes a built-in platform, which doubles as a mini-fender on rainy rides.