Review on 🔧 Compact Mini Size 2.5" 2.5 Inch Adjustable Spanner Nut Wrench Tool - 0~10mm Jaw Capacity, Black by Geoff Cooper

It works because you can open and close the jaws of a wrench, but it's not really meant to be used. If you just want to hang it on a keychain (or necklace or whatever) this is perfect. But if you use it like I did, you'll find that it's not powerful enough to do what it needs to do. I wanted a very small wrench to turn the small pins on the stringed instrument to tune it. I was almost done (it has a lot of strings) when it went out of line and blocked. Sure a bigger wrench would give me more torque so I could apply more force but the gaps between the pins are small so this one looked perfect. The product description must clearly state that it is for decorative purposes only.