The Specialized Inner Tube 26 Inch Schrader Valve is composed of a high quality and affordable Butyl tube. Specialized use a moulded construction method to ensure a consistent thickness of Butyl rubber. These tubes are available with either the standard length valve of a 40mm length valve for slightly deeper rims. Our standard tubes use a moulded method of construction ensuring a consistent thickness of butyl rubber. The one thing we all need to go riding. Lightweight consistent in quality and exactly the right size.