The new Airtool MTB is our most dependable durable & big-volume frame pump for use in all off-road conditions.> Larger volume body for pushing more air> New stainless locking lever head converts to Schrader or Presta for easy use on all bikes> Plunger locks to body chamber with a simple twist for secure storage> Overlapping locking handle for compact size & efficiency> Storage chamber in the handle for patches etc.> New water bottle boss mount included> Aluminium shaft handle & chamber for durable performance