Inner Tube, 20" bikes Presta valve LONG $10.00 us - $10.00 Quantity This product is currently sold out. Please fill in the form below if you'd like to be notified when it becomes available. A replacement for 20" bikes equipped with a skinny 'French' valve (like on a car). 60mm valve stem. Super long stem to fit Verge X18. OE...no packaging. Reviews Reviews Customer Reviews Based on 1 review Write a review