Im impressed with the quality of this ones, they look great on my Les Paul Custom black beauty with gold hardware, the color matches perfectly, they are made in germany the screw fitted like tight but TIGHT IS GOOD!, now one thing you may have to keep in mind when adjusting this is that you have to adjust the nut with a plyer , because if you adjust it by hand it WILL eventually come loose, i did it, and not a scratch, i highly recommend this locks.

I puchased a new american strat. These came with it. Unfortunately I was just in the right postion and the Schallers turned just right dumping my guitar. My new strat was chipped big time. I bought the Dunlops and installed them on both my guitars. I think the Dunlops are a better product.

They keep the strap on. What more to say?

I bought these for my bass and my guitar. Nothing else is even close. I do lots of stage tricks so it's important to know that I won't drop my instrument. All you do is tighten down the nut until it won't budge, and make sure that the mouth of the lock is facing up when you clip it onto your intsrument. If you set it up right, it is physically impossible to drop your instrument. Bravo Schaller, bravo.

These strap locks work just fine. I will warn you though, these do not work on Gibson's. The screws are not big enough. They work fine with Fender and Schecter.

I was going to buy the Dunlops because they were cheaper, for my Telecaster. But Deryck Whibley (Sum 41) uses these on his telecaster so I bought these hopping they would fit. When it came in it had just a picture of how to put it on.(pretty simple) It didn't fit in my hole so I but a toothpick with some glue and it fits perfect. I never had it come loose or drop my guitar. Great strap locks.