The clever dual gauge joe blow dualie floor pump was exclusively designed for low pressure fat bike tires and moderate pressure mtb tyres a massive oversized barrel is 15 times larger than a standard floor pump and delivers large air volume to fill oversized tyres quickly a 30 psi 2 bar gauge shows precise low pressure for fat bike tyres while the 75 psi 5 bar gauge shows higher pressures for mtb tyres joe blow dualie features massive 444mm steel barrel move big air vo