These are a pretty effective locking strap attachment. If you have a strap that is really comfortable, but are having a hard time keeping it on the guitar, this is possibly the best thing that you've ever seen. You just need to install the locks into your strap, which the directions will explain quite easily. You also need to make sure that you're guitar works with it, but it's easy because the attachments come with it. I have to say that while I've found many guitars that have the locking straps, some are better than others. For instance, I had to buy a specific kind of strap that I didn't really enjoy that much just to get my Stratocasters lockstraps to work. This will work on any guitar, as long as you use the same strap. It's very convenient for those who have one strap that works for all. The best thing about it, in comparison to other lock straps, is that you have plenty of room to rotate the guitar in different directions, and it doesn't even necessarily feel "locked" (as in trapped) in place. You get all the freedom of a regular strap with none of the worries or concerns of dropping it. I for one think that this is a great choice for people who are unhappy with their strap situation but have no desire to do serious work on their guitar.