First of all, I like the mirrors, but they can vibrate a little much.nnNow, the warning. The little screws can vibrate out of the bar end of the mirror. I highly recommend putting some Loctite or something on them to help them stay in there.nnFor those of you like me, who had 3 of the 5 on one side vibrate out, I spent way too long trying to figure out what the screws were so that I wouldn’t have to buy a whole new mirror just for them.nnThe screw is a metric socket screw m4 x18mm . I ordered them on Amazon. I know that Menards has really close, m4 x 16mm, but they’re a little short. I would have loved for someone to have written this for me before, so I want to pay it forward to someone else dying to know this info!