Doesn't fit in an 1157 socket
587039
Unfortunately, this won't fit in the brake light socket. I'll save them and hopefully they'll fit in another one of my vehicles, but they don't seem to be very well made.
4597907
The sockets are put too closely. There is not enough space to fit 3 plugs and I ended up with two only. Build quality is so so.
46499
03 Saab 9-3 ARC - Doesn't fit completely and won't turn on in my 12V socket. Useless to me.
2720028
It didn't fit my motherboard's socket (Yes, I know. My fault). I am getting a new motherboard ordered to use it. I will update my review once I get it installed. I have high expectations so if there is any thing wrong... you'll know.
765768
The reverse light socket on my original circuit board was loose, so the bulb would flash when in reverse, if it came on at all. I purchased this board and a new lens since the old one was leaking and two of the four plastic mounting tabs were cracked. This board will not fit the lens I purchased or the original lens on my car. At most I can get 3 of the four tabs to lock in, and the seal does not quite line up. The main issue I have with this product is the fact that it still has the loose reverse light socket. Not that the socket is loose, but I can wiggle the bulb and it only works if I apply pressure in one direction, or if I shake the whole tail light. I did try alternating the bulbs with the driver's side, and found the problem is not the bulb. No matter what I put in that socket, it will blink. I know this is not an issue with the wiring harness, because I tried moving that around, too, and that did not effect the bulb. I was disappointed to find that the main issue with my old circuit board was also occurring with the new one.

Two stars for imperfect fitment and a faulty reverse socket. I would greatly appreciate some information on how to return the product, or how to get a replacement.
373140
The product seems fine, but instead of a 17mm socket (the most common use one for me) it came with two 16mm sockets instead.  Obviously a quality issue in the packing.  The quality of the product seems fine.  Just frustrating to not have the correct sockets it should have.
296503
Didn't quite fit, claims it's a 5202 but did not fit in my grand cherokee 5202 socket, but I found out that chrysler/dodge does this on purpose to ensure they recieve the sale.
704733
Bought this to remove the 1 1/16" oil pressure switch from my 2014 Chrysler Town and Country. A regular 1 1/16" deep socket fits the sensor but the walls are to thick due to clearance issues around the switch. Figured this socket would do the trick. The sensor does not even fit into the socket! Not even close. I wasted three days and a day off from work for an item that is described as fitting 1 1/16" oil pressure switches but did not fit mine!
2109076
This bulb will not fit all sockets because of the wide bottom.
2058980
The cables I had wouldn't fit in the Garmin's socket. Apparently, the socket is non-standard. I'm not happy about this, but that's what it is.
3776337
This socket is not for UNO. Wrong description. Maybe quality is OK, but I cannot test is as size is wrong
35354
The plug does NOT fit sockets with a 2.5 mm pin. It fits ONLY 2.1 mm.
2063100
The sockets were for the American market (wrong plug & voltage specs).

This was my fault for not checking properly before I bought it.

It costs too much money for return shipping, so my only option was to throw it in the bin!
4660871
These bulbs did not fit the receptacle while regular Philips halogen bulbs had no problem. I had to mess with them for a long time, trying to remove one after forcing it in, which turned out to be a major ordeal. They seem larger than the spec size for the standard MR16 shape with GU10 base. Returning them.
1440233
Appears to be a good strong socket and I liked the 6-sided "mechanics" style but the slot cut into the side was too narrow for me to use to extract the o2 sensor on my Ford as the wires on the Ford part are protected by a hard sheath which make them too thick to get thru the slot.
2200276
Had to return did not fit my socket drive. Okay if you have a 1/2 inch set.
2280353
This item is not fit to Intel motherboard of LGA-2011 socket and also be aware ... it is very loud that you can hear next 2-rooms ! Very poor design since the fan blow into the aluminum fins that create fiction with loud noise... also did not cool down the Xeon E5-2650 at all.