Designed to work with their revolutionary tire inserts, the CushCore 44mm Tubeless Presta Valve Set are CNC-machined beauties. Their air passageway is T-shaped, rather than a simple through-hole, making them resistant to bending and clogging. They seal up great and lock down onto your rim, making them an essential component in your CushCore system. They'll work in wheels without CushCore too, if you're looking for a perfect anodized color match.