D'Addario Dual-Lock Guitar Strap Lock - Guitar Strap Locks Set - Protect Your Instrument with No Modifications or Hardware - Secures Cables - Easy to Attach - 1 Pair

The strap locks are called Planet Waves, but the packaging and strap locks are actually branded D'Addario - the parent company.Tested with a Squier Strat (14 mm diameter strap button), Epiphone Les Paul (14 mm diameter strap button), Gibson Les Paul (15.3 mm diameter strap button), PRS Custom 24 (15 mm diameter strap button). Worked on all of them, even when combined with a very thick leather strap. Very nice indeed.By comparison, the twist-style Dunlop strap lock could only work with a thin strap on the Strat or Epiphone, but not the others.Hole for the strap button to go into is 16.4 mm wide, but the button then needs to fit into a cup with a diameter of 15.5 mm (so 15.5 mm is the maximum diameter of your strap button).Hole for the strap button's neck is 9.3 mm (so that is the maximum width of the neck of your strap button - the part where the strap sits). This means that it will even work with some electro-acoustics where the jack and strap button are combined, but you will need to measure the neck of your button to make sure that yours is narrow enough.(This also sets the minimum width of the strap button, but that measurement is more complex, since it would need to be the width between one side of the button's neck, and the far side of the button's head. Quite simply; very few standard strap buttons are small enough to be a problem.)Plastic is 1.7 mm thick, so you need that much free space for it to fit between the strap and the button head.If you want to use it for holding a guitar cable, the cable slot is 6.4 mm wide at its narrowest point, so that's the maximum diameter of the cable. A 7 mm thick cloth-covered cable could be forced through with difficulty, but any thicker and it would cause the clip to remain open, allowing it to unclip from the guitar.Easy enough to fit with thin straps. Needed a bit more care to fit it with a thick leather strap (but even coped with a large, padded strap). Easier to use than the Dunlop twist style strap lock, and cannot accidentally be twisted off either.With thicker straps, it can press the leather strap onto the guitar finish, and over time may cause rubbing.Locks very well, not brave enough to test swinging the guitars over my head, but it doesn't feel like it could ever come off by accident, so it's much better than the Grolsch-style rubber washers. However, it is important that you keep the wire-slot side of the clip facing down towards the ground when you are holding the guitar; away from the guitar strap (the direction it would naturally be if you have a cable going through it). If you rotate it the other way up (so that the wire slot is aimed upwards towards your shoulder), then pull the guitar strap outwards, the stress from the strap gets put against the wire slot, which can cause it to unclip. Attached a picture to show this.

Bought these for my guitarist son to keep his strap in place. They work very well and are easy to use. Would recommend and good value for money.

I am using these on my quite heavy bass guitar. They are easy to put on (a little harder to remove!), and hold your strap securely. I have had no mishaps. There is an extra clip where you can also secure your guitar lead. This works well and again is secure. Made of plastic, but seems fairly sturdy and has not been damaged even by repeated bending. Recommended.

Fantastic little things. Beat those rubber circles, beat strap locks, beat the daddario special straps. I've tried all them things and this is so much betterthere is a knack to putting them on and a new, thicker strap will need a little pushing but once they've been on and off a couple of times it is easy and really secure.there is a loop thing to hold a lead which is fine if the lead is thick, otherwise you can put a bit of padding on it ti keep it in place. i play and SG so the neck end one is not really visible but on a strat you might find it hangs down a bit.

Easy to fit, work great..Not noticeable. Will get for my other guitars.

They are excellent strap locks appear very secure.

Couldn't get them on my japanese fender strat which is what I wanted them for initially - do fit on a Schecter I have which has smaller strap buttons and they do hold well. Kept in end because they were cheap in reality.Just be aware they are not one size fits all. Knocked down to 3 for this fact as would expect them to fit strat style buttons

For £5 these are a cheap alternative to the likes of Schaller and work well.Of particular interest to me was the improvement it makes to my ES-339 which has the strap button mounted on the rear of the neck. This device lessens the strap angle and means that the guitar doesn't fall away from your body as much. Not as good as moving the button onto the horn but an improvement nonetheless.