I think we ended up cutting one off when we struggled with the bolts. Then I replaced them with these. Gives it a finished look
View attachment 37552
Gg1 shows a pic below of the end caps. I can take a close up in the morning if interested.I actually did not mind them on a stock TJ...I removed them when I replaced the bumpers with aftermarket ones.
I now have the stock bumper, which I actually like, but didn't like the big milk jugs, so I went with Mopar flat ends caps as pictured. As you can see I am in the middle of work in progress. Yeah, that is some crazy Hummer in the background. lolView attachment 37561