Usable only on specific surfaces
589637
There were fewer stickers than I expected, just one sheet. While they seem to stick well to my helmet, they are peeling off my skates after only a few days (see image). They're nee skates and I washed and dried the surfaces before applying the stickers.

I got the yellow ones, and they are more of an orange color.

They are a great, fun shape, a really flexible size, but only seem to stick well to specific surfaces.
2804873
WATCH OUT WHEN YOU BUY THIS AS I DIDN'T CHECK THE METAL IT GOES ON :(

This can only be used on steel NOT ALUMINUM.....

So before u order these check to see if the surface you will be putting these on are MAGNETIC

The outer area for my in take was aluminum so this did not work.

NOT THE FAULT OF THE PRODUCT-YOU HAVE TO CHECK FIRST
4734596
Great product but not suitable for specific application. Manufacturer advised against it. Thanks Sikkens, you saved me from a world of hurt. The manufacturer of ABS brackets to hold down solar panels recommended it. Turns out it is for stationary RV applications only. Left this little tidbit out on the installation brochure. The solar panel retailer was unaware. My hat is off to Sikaflex and solar panel retailer, they were both great companies. Manufacturer of the ABS brackets seems like they did not give a sh##.
4513487
This is a super powerful vacuum soap holder.  However, it cannot be applied to tile, porous surfaces, so where can it be used?  It is made well, seems very well made, but if it can't be applied in a bathroom or a kitchen, it is useless.
1462144
Needs a super smooth surface - Worked good on painted wood as it shows in the picture - Would not stay on sheet rock that has texture ...... great idea but limited application
3720288
Probably a very good product if used exactly for its intended purpose. As the label says, this product is for china and glass only. Maybe delicate porcelain. It is worthless for any other kind of ceramic or clay pot repair, in case anyone expects to stretch it's purpose a little, like I had hoped to.
609116
This is defiantly a piece that is only for sliding doors and windows. I bought this for my sons room to use on his regular double hung windows but it did not fully grip the frame. Today I had found that he was able to rip it off. Besides that it was a good product just not for what i need it for.
3544744
This works as stated, but I wanted to write a review so that buyers can note that this can only be used with vertical outlets. Yes, you can see that from the photo, but I hadn't looked closely enough!  I wish they could rotate, as all of the outlets in our office and kitchen are horizontal.
2423599
wish the description indicated it was only usable on XP, 2000, and earlier windows, will not work on any windows greater then XP.
1029346
Design can be difficult in tight spaces, adhesive isn't very strong.
For temporary use, or use on sensitive surfaces like walls, I imagine this would work well. I used them in an automotive application which proved to be so-so for this product.
1349885
Not ideal for the surface because you have to take it totally out to use. would like better if I did not have to remove the surface to use.
491475
works pretty well on most surfaces and the results show up well,. Metallic surfaces are the exception, it doesn't work on reflective surfaces.
227696
I intended to used this tool for swiping acrylic paint. The metal pieces aren't facing the same way. Good for chalk but not for my needs/ I will see if I can adjust them.
4250170
Doesn't work with waterproof LED strips. Only fits certain strip widths.
3450816
I read a bit more after I bought and found this is not to be used on marble / granite which was my intention.  I will need to find different product.
743699
These are decent for moving a few large items on a few surfaces, but in general they do not work for most purposes. If you need to move a pool table on wood floors, getting four of these would work well. If you need to move move furniture on one continuous, hard surface you'll be fine. But anything that is being moved from one surface to another -- or anything on thick carpet, concrete, or tile -- will be a disaster. The wheels are too small and they catch on everything. Get a real furniture dolly or use a hand truck instead.
3373335
Good for maybe a small walkway or patio area...need to use this on a level surface, does NOT do well on any type of dip or groove.