Suitable for converting diameter 31.8mm for 25.4 handlebars.to meet different needs, it can be used with bicycle computer, mobile phone holder, bicycle light holder extension rack, etc.Made of high quality materials, durable and practiInstallation is simple and quick, directly buckled in the handlebar installation positionColour:blackMaterial:Silica gelPackage Contents:8 x Bicycle Handlebar GasketOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.Suitable for converting diameter 31.8mm for 25.4 or 22.2mm handlebars.to meet different needs, it can be used with bicycle computer, mobile phone holder, bicycle light holder extension rack, etc.Made of high quality materials, durable and practiInstallation is simple and quick, directly buckled in the handlebar installation positionColour:blackMaterial:Silica gelPackage Contents:8 x Bicycle Handlebar GasketOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.