CushCore Tubeless Presta Valve Set - 44mm TurquoiseCushCore Valve Set 44mm Turquoise. CushCore tubeless air valves are specially designed to work with a CushCore tire insert. The air passageway is T shaped rather than a simple through hole which prevents the insert from obstructing air flow through the valve. Made from CNC machined from 6061 T 6 aluminum anodized black Tapered rubber collar permanently bonded at the sealing interface The valve core can be removed to add tire sealant Valve locknut with