Thule Front Stop - 321 The modular system allows you to create your own safe carrier solution for longer and bulkier loads. An excellent complement to the Thule Conduit Box 317 if you want to carry pipes over 3 metrers long or you have larger diameters. This safety accessory is easy to fit and made from a durable and protective polymer. City Crash tested and approved due to the built-in crash plate behind the plastic shield. Two special Ratchet Tie Downs for the Thule Side Profiles 322 are included to secure the load. NOTE: Needs to be supplemented with one or several Thule Side Profiles 322 to adjust to your car/load length. Front stop only - silver rails front to back and bars not included Fits Thule WingBar Evo - No Fits Thule WingBar Edge - No Fits Thule WingBar - No Fits Thule SquareBar Evo - No Fits Thule ProBar Evo - Yes Fits Thule SlideBar - No Model number - 321000