Our best-seller, the Model Pro 1 is a double layer roof rack that features a unique figure-7 shape, placing the vacuum cups in a perfect triangle for maximum holding capacity. It holds 1 bike (up to 20kg). The double layer deck has 3 TreeFrog vacuum cups, each rated to hold 110kg, a fork mount, and a strong, Velcro-closure rear wheel holder. The 9-15x100mm universal fork mount securely holds either a standard 9mm quick release or a 15x100mm fork no need to switch out fork mounts! All TreeFrog racks are available with different fork mount sizes (including one for the Lefty fork) at no extra charge. It’s a great choice for any car, and it even fits in a backpack, so traveling with it is easy, and it’s an excellent choice for use with rental cars and can be mounted on the roof, hatchback, or rear window.
How to maintenance my vacuum pump: https://www.youtube.com/watch?v=Sg8hxup4N64