Thule roof bars with locks, key and instructions, c/w grips for Seat Altea/Toledo others obtainable ?

These are the square bars , see photos. They have the 754 feet pack, fitting most cars without gutters or rails. The feet need a rubber grip shaped for the contours of the car roof. This set has a grip for a Seat altea 5dr 04--> or toledo 05 5dr --> but I believe others are available 15-20 Onto these bars you can then attach cycle carriers/ roof boxes/ kayaksetc. My new car has its own roof rails so the clamping mechanism is completely different.