The new airtool mtb is our most dependable durable and big volume frame pump for use in all off road conditionsgt larger volume body for pushing more airgt new stainless locking lever head converts to schrader or presta for easy use on all bikesgt plunger locks to body chamber with a simple twist for secure storagegt overlapping locking handle for compact size and efficiencygt storage chamber in the handle for patches etcgt new water bottle boss mount includedgt alu