I imagine the strut brace will be bolted to the top of the strut tower. If you get bolts 12mm (threaded lenght) long they should be OK. Otherwise you could ask the company that sold it to you to send you some as you have paid for the complete assembly.
A forum community dedicated to all Volkswagen Group car owners and enthusiasts including Volkswagen, Audi, SEAT, Skoda, and others. Come join the discussion about performance, modifications, classifieds, troubleshooting, maintenance, and more!