This clever dual gauge floor pump was exclusively designed for low pressure fat bikes and moderate pressure MTB tires. A massive oversized barrel is 1.5 times larger than standard floor pump and delivers large air volume to fill large tires quickly. A 30 PSI gauge shows precise low pressure for fat bike tires while the second gauge reads to 75 PSI for other MTB tires. An air Release button on the twin head allows for fine tuning pressure.