CBO Rubber Rim Gromet - Presta Adapter

• Extremely handy little grommet which converts your Schrader valve hole to fit a Presta valve stem
• Holds your Presta valve securely in your rim making inflating your inner tube easier
• Easy installation and removal; This grommet is simply pushed into your rim
• Gives a clean install of presta inner tubes and stops dirt entering the valve hole and causing inner tube punctures
• Bicycle rims with Schrader sized valve holes can easily run Presta inner tubes with this grommet