Features: 1.This Truly Wonderful Innovation Fits Your Finger And Lets You Pop Up Like A Magic. 2.Simply Place Your Hand On Top Of The Bottle To Measure The Protection Under The Ring. 3.Without The Can Opener, It Was Never Caught, Saving The Wealth Of Dental Bills And Key Cutting. 4.Design The Ring For Ease Of Use. 5.It Is Used To Open Beer Bottles For Easy Transportation. Description: 1.Material: Stainless Steel 2.Size: Inner Diameter Of About 20mm 3.Color: White,Yellow,Red,Blue,Black Package Include1 X Mini Ring Beer Bottle Opener Notes: 1.Transition:1cm=10mm=0.39inch 2.Please Allow 1-3mm Error Due To Manual Measurement. Pls Make Sure You Do Not Mind Before You Bid. 3.Due To The Difference Between Different Monitors, The Picture May Not Reflect The Actual Color Of The Item. Thank You