D'Addario Flex Lock Strap Blocks - Locks Straps In Place - Protect Your Instrument with No Modifications or Hardware - Easy to Attach - Set of 4 Blocks - Black

These are basic but do the job intended very well. They keep the guitar strap safely attached to the guitar and are a very snug fit so they won’t work their way loose. So far they haven’t stretched or come away from the guitar body. Can recommend

A simple yet effective solution to my many near misses with my guitar strap slipping off. Wish I’d discovered them years ago. Low cost but high impact 😁.

Very effective, quick and easy to fit. Works well with standard strap buttons but not the combined output jack/strap buttons fitted to many acoustic guitars.

Have used these for numerous guitars and not had issues. My daughter has an Ibanez Mikro and the secure the strap perfectly…however, my son has a Squier mini bass and they are not suitable. The strap pegs are smaller than most used on other guitars and basses, so they just fall off and done secure the strap.Any other guitar with normal pegs though, absolutely brilliant, not issues at all, would recommend.

Neat, simple and reliable. A good buy.

Cheap and cheerful way of adding some security to guitar strap attachments

In my opinion the best of this kind of product because they have the tab to help pull them off. I used to use strap locks, but in all honesty these are just as good for a fraction of the price and you don’t have to change your strap buttons. Better than the rubber top off a Grolsch bottle because they’re black and have the aforementioned pull tab. Can’t go wrong!

Excellent item, great value