Wheels Manufacturing valve reducers - Schrader to Presta - pair
These nifty little inserts fit in the valve hole in the rim, reducing the size from 8mm to 6mm
This allows you to run Presta valve inner tubes in a rim designed for Schrader valves
So perfect if you want to run a Presta valve inner tube such as the Schwalbe SV4 in your Brompton 16 inch rim (note the Brompton T Line and most P Line models already have a 6mm prestos size valve hole)
Colour: Silver
Machined aluminium