Easily open double rings! * Simply clamp it on * Easy to open double rings * Won't damage your nails when changing keychains - Model Name: Double Ring Opener - Size: Approximately 5.9cm - Country of Manufacture: China Thank you for viewing. I'm selling this because I'm decluttering, although I had it as a spare. It's unused, but it has been stored at home. Please refrain from purchasing if you are concerned.