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 - Red

These give an additional level of confidence to what can only be described as the terrible strap attachment found on most guitars - designed to fail eventually.These aren't in the same league as the dedicated quick release devices such as Schaller strap locks, but if you are keeping the strap on the same guitar then they will help to keep the stap in place.Depending on the strap thickness and guitar mount these can be easy to fit or not!Found on one guitar had to unscrew the mount slightly, fit the flex lock strap and then tighten it up again.Well worth having if not using a quick release type device, plus here is no hole drilling etc.Would I buy again - Yes.

Simple item, works brilliantly

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!

Great for keeping one strap on one guitar securely. If you prefer to swop a strap between various guitars there are more convenient options from Dunlop and Schaller

Work very well better than all others I have tried

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.

I've been meaning to get some strap locks for a while and when I saw these, with the little tabs on the side, I thought they'd work for me as I might need to change the strap.And they are. They work perfectly, go on well and come off easily- but not until you take them off.No more having to bend down at the speed of light to catch my guitar before it take the floor out.