This carrier has a double layer deck, which could carry 3 bikes (total loading capacity is 60 kg) or maximum 2 e-bikes. The Pro 3 double layer Polycarbonate deck has 5 TreeFrog vacuum cups, each rated to hold 110 kg, 3 fork mounts and 3 robust ladder strap rear wheel holders. The 9-15 x 100 mm universal fork mounts securely hold either 3 standard 9 mm quick releases or 15 x 100 mm forks, no need to switch out fork mounts! Pro series are available with different 10 mm, 15 mm and 20 mm thru axle fork mount sizes (including one for the Lefty fork). It’s a great choice for families, for all cars, and can be mounted on the roof.