Compatible with bicycles up to 29 wheels thanks to the oscillating rear wheel support. Compatible with QR wheel axles and 12x100mm diameter thru axle. Adapters for 15x100mm and 15x110mm thru-axles not included. Mounting on symmetrically shaped roof bars up to 80 mm, with a distance adjustment between axes up to 600 mm. Maximum permissible load 16 Kg.