It's back, the Pro's favorite! Perfect for Tubeless tires, valve extenders and any Presta valve. It includes Prestacycle's newest version of the Mini Presta Head Gasket using Urethane Elastomer. It's softer and stronger. It lasts more than 5 times longer, gives a better seal and flexes to work anywhere along the Presta shaft for any Presta application. Prestacycle's design engages the Presta valve just below the cap threads and requires less insertion. Deep head adapts to a wide variety of applications including valve extenders. The head is now very easy to get on and off. This head is a MUST for Tubeless tire users. Allows high-flow inflation with the valve core removed for seating tires. PUSH on / PUSH off - the fastest way to get you going. Made with nickel-plated 6061-T6 alloy - Strong as Brass and only 1/3 the weight. It's also compatible with Silca pumps and can be adapted to other pump brands with our optional Schrader barb or our floor pump replacement hose. Patent-pending 2-way connector screws onto the Prestaflator threaded connector or directly clamps to a hose.