Its a customized model of the prevously design Bottle Opener featuring as keyring. Just insert the bottom curved sharp notch into the slot provided and use as you would a traditional bottle opener! Know how to make this part better? Have ideas for new parts? Visit our website (https://www.cad.ai) to take our services to the next level! Want to know how much it would cost to print this part? Visit https://www.3Dprintler.com and compare prices from today's top 3D-printing services.