Specifications:Material: PlasticSize: 43mm*43mmFunction: To help keep the wine fresh.and keep the wine can't be stolen.Lead,Cadmium free.Features:Easy to save wine and Environmental protection.High Quality Black Plastic Red Wine Stopper Digital Bottle.Locks Safe Gift Locks. This a code lock which can lock.the mouth of the red wine bottle,makes the wine bottle.sealed,keep the red wine in bottle fresh. It can prevent.red wine being stolen drunk or switched. Red wine with.this code lock will be very safe.It's suitable to be used.in pub,wine shop,hotel,super market etc.It's also suitable.for promotional gifts.PS: password setting method:1st step: Press and hold the silver round button on top;2nd step:Adjust the number on top( initial password:000)to a new password you want to set;3rd step: Release the button,password setting will be finished.Package Included:1 x Wine Stopper LockNOTICE：When you reset the password, if you forget the new password, the lock will not open. So please remember the new password.Due to manual measurement, the size may have an error of 1-2mm.