Didn't work with hard hat
937485
Couldn't get it to stay on helmet, which is what I needed it for.  But works well as far as brightness.
2621426
The costume measurements were a little off & it turned out to be a bit big. But what didn't work at all was the hat! It was huge & I just couldn't make it work.
757239
My husband is building a trailer with these hubs. He said the dust caps didn't fit. had a hard time getting them on and doesn't know if they will stay on.
166068
Nice item, but did not attach as it said it would.  I tried several different ways, it just did not work for me.
865963
Tried to use these for removal of the snap ring on a GM NP246 transfer case (that had the infamous pump-rub failure). These didn't quite do the trick. I added tape and plastic tubing to the ends to try get it stretch a little more, but didn't work. In the end I used these with a flat heat screwdriver wedged in between and managed, but these are not the tool for this job.
2120921
Worked well on cyclone fence posts but couldn't even budge the many cemented in wood fence posts I have to remove. Not even a wiggle with multiple people pushing on the handle. Even after a Heavy rain and we ground. So it has its limitations. It's solid and well built just didn't work on cemented in wood fence posts.
363150
Got item and it doesn't work at all. I was really looking forward to the hat. But, I'll be sending it back.
3830310
The hat can not fit upon my head. It's not a one size fit all type of hat.
1699799
I have 18 inch wheels with a 2.5 inch center hole.  These caps measures a tiny bit over 2.5 inches.  The problem was they have a lip and this did not allow them to go far enough into the wheel to snap in place.  I had to do some modifications and grind down the sides in order to get the caps to fit inside the hole so the clips would make contact.  See the attachment pictures -  the grinded caps fit down inside the wheels so the clips could snap in,  this way they will not fall out.

They look nice but it was a pain to make them work.  I thought about sending them back, but after some research they all seem to fit the same and I probably would of ran into the same issue.  However, the end result looks nice I think.
1631503
I out the baseball cap in the holder and put it in the washer I took it out and the ball cap buddy didn't hold the form of the hat at all.
3019816
Hat was very, very stiff...so stiff that it would not conform to the shape of my head...didn't fit well and would not stay put.
4216119
Job required a hard hat.  Saw this works wonderful with having to hear a Bluetooth.  Several of my friends seen it and had to have one too.
589049
I was not able to pair thia bluetooth hat to my phone. The paper work that comes with the hat says if I have any problems that they would be glad to help me but there is no number to call. My phone is an android phone and I know how to link the bluetooth but this jus would not work. I even had a friend try to link it to their phone and it didn't work.
2638548
Returned item, for whatever reason it wouldn't work with what I was trying to do, but it wasn't defective. I just had a hard time with it.
4568745
Did not attach naturally to my (older) 3-ball Storm roller bag. Had to cut, align, and adhere Velcro strips on bottom is shoe bag to match strips on bowling bag.
4760481
This particular hat fit too "tall" on my head. When I put it on, it fit around, but when I lowered it to the top of my head, it went over my ears. Other hats don't do that, so I sent it back. Probably just the stitching of this hat in particular.
1038108
This Monopod, while a very sturdy design, doesn't work for me.

  I'm not sure if I got a defective unit or what, but I could not get the rubber foot to come off or pull back; there's no instructions.  I shouldn't be that hard, but I just couldn't figure out how to use the spike.  More importantly, I thought it would have a 1/4" screw connection for a tripod;  it did not.  Or, at least, because I couldn't get to the threaded spike, it didn't.  I had mainly intended to use it with a GoPro and a  "Three Feet Support Holder Stand Base for Digital SLR Camera Camcorder and Monopod Unipod with 1/4 Screw".  Thus, I returned it.

To be just, it was a nice monopod; the foot just wasn't versatile enough to work with a GoPro and a stand.