The specialized airtool mtb pump is ideal for all off road conditions the specialized pump is the most dependable durable big volume frame pump you could buy the stainless locking lever head converts to schrader or presta for easy use on all bikes specialized airtool mtb pump features larger volume body for pushing more air plunger locks to body chamber with a simple twist for secure storage overlapping locking handle for compact size and efficiency storage chamber in the handl