These Casio signature straps are great and fit perfectly. HARD AF for installation without appropriate spring bar compression tools. I used a precision flathead screwdriver, a wooden clip, a lightbulb and my wife's hand to install them. I recommend getting a tool that will make installation a 3 minute ordeal instead of a 20 minute swearing vacation. I don't have the best eyesight, so it must have been complicated. BUT now that they are on my GA-100C they are great!
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