√.Silicone replacement earbud tips Fit Most In-Ear Earphone inner hole from 3.8mm-5.1mm(Not necessarily able to fit into a Bluetooth charging box).If you have any questions you can contact us through Amazon.√.Earbud covers material:Soft silicone material reusable and durable elastic soft to touch and comfortable for your ears.√.Silicone ear tips features :Water-washable durable flexible anti-static removable and replaceable.√.Earbud rubber tips can replace any damaged scratched defective or missing eartips give new life for your in ear earphones.√.Package Included:A box a cleaning cloth 18 Pairs earbud replacement tipsNOTE：Small items please stay away from children.