Safe and simple spring loaded fixed position arms do not contact the frame or fork. Spring loaded arm keeps contact and a secure hold on the bike even if a wheel loses air pressure. Integrated locking hook and hitch pin provides peace of mind with additional security. Tool free anti wobble system ensures a fast and solid connection to the vehicle. Adjustable front wheel block for improved fit from 20` to 29` wheels. Whole carrier tilts and folds for easy access to the trunk even with bikes installed. Integrated lock loop offers an additional option for increasing security even further. Compatible with bikes with fenders