The TCS Max-Flow Tubeless Valves features an insert-compatible base increased bore diameter an integrated valve core remover and an ergonomically designed nut that allows riders to properly tighten down the valve without the use of a tool. TCS Max-Flow Tubeless Valves feature a castellated base for multi-directional air flow out the sides therefore preventing the airflow restriction that can occur with a tire insert being pushed up against a traditional valve opening. The increased bore diameter helps seat tubeless tires and prevent clogging that would typically occur after pouring sealant through the valve.Insert-Compatible: Max-Flow base guarantees air flowIncreased Bore Diameter: Supports an 84% increase in air capacity and reduces sealant cloggingValve Core Removal Cap means searching for pliers no longer neededUses a Universal Presta Valve CoreKnurled Easy-Grip Nut with ergonomic shape allows hand tighteningO-Ring rubber grommet protects the rim from damageUniversal Rubber Stopper compatible with all rim widths and offsets