Product seems sturdy and initially work however after unscrewing once and screwing ...
925035
Product seems sturdy and initially work however after unscrewing once  and screwing  back the screw seem very stripped and will not hold a clamp  so it would not hold my flashlight.
4280804
I received the product on time and it seems to be working great, when mounting the bracket I did notice that the black piece with the metal centers where the metal rolls on to come out smoothly was broken in 3 different areas. You could visibly tell the product was used, which is fine, but you could pull the rollers out by just holding the product up and down which indicates it was snapped from previous use.
3404611
The first bottle I used seemed to work well at first.  Then the sprayer assembly came off the bottle body and I had the liquid I was spraying on me.  The second one worked great.  The third one was a repeat of the first.  That is when I decided to closely examine the product and found that during assembly two gaskets had been installed on the tubes of the sprayer assemblies of the two bottles that had come apart when used.  The extra gasket prevented the sprayer assembly from screwing onto the bottle body properly. Therefore, I cut one gasket off each and now all three screw together well, do not come apart unexpectedly, and so far work great.
2800840
First let me start by saying I got this product yesterday came home tonight and hooked it up. Hookup was pretty straightforward no complications I would definitely recommend this product for ease of install that being said if you've never used one of these before first-time usage can be a laughable moment all I can say is be careful on the first shot! Will update this review later after it's been tried on multiple occasions

Update:
After two days of having this unit installed the supply line from the hot water valve popped off by itself creating a huge bathroom mess water everywhere luckily I was home at the time and manage to get all the water mopped up the barbed fitting from the hot water adapter with a little rubber compression washer on it is in my opinion not very well designed it appears after reading other reviews that this is happened before after running to my local Home Improvement Center I was able to pick up the necessary components to adapt it properly for a secure fitting I still feel that the product itself is an excellent product but buyer beware that this one little piece can cause a lot of problems other than that I would definitely buy this unit again I would just take the necessary steps to replace that particular piece.
2208241
If you unscrew it, take note of how the parts go together.  I put one part back backwards and of course it didn't work.  Once I fixed it, this works ok s great.
1816422
Pros:
-sturdy

Cons:
-difficult to install, see below

Mine had the square brackets, so this review only pertains to those who get that type of bracket.

As others have mentioned, the mounting screws are pretty bad.  I managed to get them to work, but I'm a bit worried about being able to get them out with how soft they were and how much they stripped.

A problem I had was that I found it very difficult to install the square brackets in a way that made the bar easy to slip in.  The brackets are seemingly designed that you mount them, and then slide the bar in from the top.  There are little metal toggles that you can presumably flip over to sort of "lock" the bar in place.

In reality, this was pretty much not a think.  The quality control on the toggles is terrible, and in both cases mine were too long.  This made installation of the brackets difficult for two reasons:  1.  The toggles get in the way of the screw 2. Even when "open" the toggles don't really let the bar slide in to the bracket, so it is hard to position the brackets appropriately.

Despite measuring several times and making sure my brackets are level (using a 30+ inch level), it was still very difficult and required a lot of force to get the bar into the brackets.  They claim that the bar is removable, but the design of the toggles basically prevents this from being the case.

In conclusion:  In my experience, this bar is not practically removable once installed.  Furthermore installation was much more difficult than I thought was reasonable.  However, once installed it is very sturdy and I like the grips.  This bar represents a good value and I would recommend it.  It is important to remember that a pull-up bar has to support a lot of weight and force, so with this in mind I only penalized the product one star for the installation difficulty.
1442691
Looks and feels sturdy, malfunctioned on second use.
Was able to fix the problem with the loose ballcup.
Cup-thread-system could've been constructed better.
48290
As many may have mentioned, the screw that comes with it won't work, the spline is a bit tight on the stem adapter side so it will take more force to push it in. overall a useful product but need to include the right screw.
1774328
Looks like a high quality product but unfortunately once installed, the grub screws keep coming loose and gear knob keeps spinning and eventually coming off.
2136159
I like this product however I must add that after 2 months of use i was forced to pickup some superglue as the manufacturer barely used any. I'm guessing theres a profit margin in scrimping on glue? Anyways. Product works great after you fix the lack of glue keeping it connecting to the stand LOL.
2602074
It seems that either the screw or the hole it goes into was poorly threaded, therefore, I could not assemble it.  I'm sure the product would otherwise be worth 5 stars if it didn't have that defect.  Shame.
Update: Seller sent me instructions on how to fix my issue and now the product is assembled and working as intended.  Very pleased with their prompt response.  Excellent customer service.  Thank you.
2152901
I am using these for keys, but the piece that screws in place has become unscrewed several times.  Perhaps it is because the carabiner is rubbing against other items, but it is annoying that I can't depend on it not to come unscrewed and open.
4801989
make sure you do it right the first time, once you remove a screw you'll have to glue it together...
3769864
Sturdy and relatively lightweight so it won't be a problem bringing them on business trips.

Docked a point for manufacturing quality assurance and another point for value vs. cost.

Two of the feet had incompletely cut threads in the hole the tightening knob screws into, which required me to use some pliers to run the knobs in the first time. After that they were tight but could be threaded by hand.

One of the feet had larger than normal welding slag around the base of the vertical stub that the handle slips over requiring me to bang it on with a rubber mallet until the handle was on far enough to screw the tightening knob in place.

This is one of the more expensive set of push up bars, and I would have expected that they would have arrived ready to put together without the use of hand tools. If you do not have the tools I mentioned or equivalents, I do not recommend this product. Also, you might want to try a less expensive version as I don't really see that these are so special as to justify their higher price. However, I have them and they are assembled so I'm keeping mine.
4373773
I was about to return this item, request a refund, and leave a one star review because initially it appeared that the product was defective and could not be assembled properly.

At first glace the installation procedure appears simple enough: You get two baskets and two support rods. One rod screws in to the base basket (We'll call that rod 1) and then the 2nd basket slides on top of that and then the top rod (rod 2) screws into rod 1.

The problem is that rod 2 would not screw into rod 1. Rod 2 has the female end and Rod 1 has the male end. The male end appeared far too short and you couldn't get rod 2 to thread into it. I thought I had received a defective or broken piece. But later I figured out that the male end in rod 1 is not fixed in place, it freely threads in and out of rod 1. So first you have to thread it out of rod 1 enough for it to protrude sufficiently to mate with rod 2. This is a really stupid, really pointless, and really easy to fix design flaw. But once you realize it, it becomes quite easy to assemble. Once it's assembled the basket looks and functions great though. No complaints there. Docking one star for this design oversight but otherwise good product.
3363999
Once constructed, the product is pretty nice, and seems sturdy. One issue I had was once the kitchen was put together, the rack that sits in the middle of the oven wouldn't stay because the gap was too large. This was extremely frustrating after spending a few hours on this project. I tightened all the screws as much as I could to try and decrease the gap, but to no avail. I ended up rigging it myself to work.

I also have an issue with the instructions. Instructions should be crystal clear... For example, it says use screw 'F', so  I grab screw F and insert it only to find out there are multiple types of screw 'F' with different color screw heads. Once I saw this, it makes to use the correct screw 'F' for the corresponding board, but instructions should include this kind of note. Also, there were times where it called for pieces 48a and 48b, and both were identical. As an OCD dad who actually reads instructions, this manual was not up to par.
1408938
3 star: I ordered this for work as my new laptop no longer sports a VGA plug for presenting in many conference rooms. This adapter does work well but my complaint is that on the second use and thereafter the black plastic housing slips off exposing the circuitry on the item. This becomes tedious trying to piece it back together not to mention how gentle it needs to be handled to keep it together.

Update: 5 star
Following my initial review, VicTsing reached out to me directly and offered to provide a replacement due to my issue. The replacement item if functioning great, without issue. VicTsing demonstrated amazing customer support and quality focus. I appreciate their response.