Thule 598004 Proride XT Upright Roof Bike CarrierQuick and easy bike securing the torque limiter dial controls the force going into the bike frame with a clear sign of correct mounting Lock core and keys sold separately Quick and easy bike securing the torque limiter dial controls the force going into the bike frame with a clear sign of correct mounting Automatically positions your bike when you secure it, thanks to the uniquely designed frame holder and wheel tray Safe mounting your bike is