This EnCase Pump from Wolf Tooth is only compatbile with the Clik Valve stem system. The EnCase Pump for Clik Valve is designed for quick use, easy access, and reliable perofrmance. It was developed for use with mountian, gravel, and fat bike tires, requiring less force per pump stroke than competitor pumps to inflate high-volume tires. The pump's Enviro-Lock sealing is best in class, all internal components are protected from water and trail debris with weatherproof seals. When stored on a frame using the included mount, the pump is easy to access and ready to use without worrying about mud or grit affecting pump performance. Clik Valve is an alternative tubeless valve core option to Presta. Advantages include increased durability, increased air flow, and an intuitive click connection between the pump and the valve core. The Enviro-Lock System fully seals pump internals for best-in-class protection from water and grit. Even when your pump is muddy, you know that the internal components are spotless and ready to quickly inflate your tire. The EnCase Pump is offered in three sizes, each with big volume; the 30cc, 40cc, and 85cc.