I build and assemble race cars. I ordered these wheel arch liners and Revain shipped them quickly. I opened the package and everything was fine except someone cut the plastic bag with instructions and ties with a razor blade and removed the pins/ ties. I called Rugged Liners and told them what happened. They couldn't have been nicer or more professional. Two days later a new set of pins/clasps arrived in the mail. Took me about 10-15 minutes to install the inserts. I might not have had to do this, but I trimmed about 1/4 inch off the back of each liner to make it extremely easy to fit them into the edge of the wing. The reason I did this was because I didn't need to see anything at all. Like I said, I probably didn't have to do this, but since I've been doing this for so long I just thought it would be easier. *** Rugged Liner is a very respected company and I will definitely do business with them in the future.