I'm not sure. I didn't use them. I don't have the big rivet gun and didn't want to purchase one. Instead, I took my handle to The Home Depot and found a bolt that was just long enough to go thru the handle and door to put a lock washer and nut on. I do know that it will be easier to replace the handle next time and why I didn't do this before I don't know. If you choose to do this, make sure the bolt isn't so long that it will interfere with the window rolling up and down.