Guitar Potentiometer Audio Pots Volume Knob Pots with Long Split Shaft A500K B500K A250K B250K OHM Replacement for Electric Guitar Pack of 40

I buy lots of parts online. Amazon is just one of many sources. Usually I don’t have a problem with components but this batch has had a few failures and certainly more than I’m used to seeing. For example, one pot wasn’t working and it appeared the circuit wasn’t working. I had to press down on the pot for it to work. I eventually took it apart to see where the problem was. As far as I can tell, the electric contacts were off center and the wiper wasn’t making a good connection.

I bought these potentiometer to practice on my soldering skills thats all they are good for if you want excellant pots get CTS pots.

These pots are horrible.-The resistance on high doesn't even go above 200 on most of them.-The resistance fluctuates a lot when soldered wires move.-I had about 20 of them fail on me so far in a couple of hours of working on a project.-Most are covered in sticky residue.Whoever the seller is must be selling all the quality control rejects from a factory because they're all rejects.Unfortunately I bought 3 sets of these at the same time before I noticed how worthless they are.I bought other cheap ones before that worked as they should.