Designed for Fat and Semi Fat tire bikes, the Big Bore packs massive volume per stroke and a unique head that still works with winter gloves on

• Oversized press-on Schrader and Presta head won't accidentally remove valve cores and can be easily used with thick gloves.
• Flexible hose attachment allows for aggressive pumping without fear of damaging valve stems.
• Inverted barrel design allows for high volume in a compact size.
• Coarse machined aluminum barrel for extra grip.
• Water bottle boss mount with elastomer band included.
• Max pressure: 50psi (3.5bar)
• Volume per stroke: 90cc