I have ordered the missing bolt and will include this in the set when it arrives. This set is complete and ready to install (once the bolt arrives). Of course you will need a set of bars to complete the roof rack. This will fit pretty much 99% of the bars on the market. I can include a set of 120cm Thule bars if you need them…..contact me. Instructions of how to fit kit 3050 are on the Internet and a link is included. Items will be well packaged for shipping. Comes with a key and the plastic brackets. https://www.roofracks.co.uk/pdf/3050.pdf