The Hornit Clug is designed for mountain bikes with tires ranging from 44 mm (1.75") to 57 mm (2.25"). It works with your floor to store your bike either vertically or horizontally. Clug can be mounted in just a few minutes using the included screws and plugs. The Hornit Clug can only be attached to a wall or a stand. If your tire falls within the range of 44 mm to 57 mm (1.75"-2.25"), you should choose the Clug. The award-winning Clug, recognized with the Eurobike Award, is the smallest bike carrier in the world. This wall-mounted bike storage solution works with your floor to store your bike vertically or horizontally. You won't believe something so small works so well, but it does. You simply roll your bike up and place it into the Clug. It's like a hug for your bike. The Clug is available in five sizes from 23 mm to 81 mm and can be mounted in just a few minutes with the included screws and plugs. It truly is the easiest and cleanest way to store your bike.