These Dunlop Straplocks work great, especially if you lube the spring button and such. I would give it 5 stars if the guitar strap-ends ended up closer to the guitar body when using these straplocks. There is a 1/2" gap between strap-ends and body, which seems less trustworthy...but, you can also use any regular guitar strap that doesnt have straplock parts on it...hence "Dual-Design". That is pretty cool...