This clever dual-gauge floor pump was exclusively designed for low pressure Fat-Bike tires and moderate pressure MTB tires. A massive oversized barrel is 1.5 times larger than a standard floor pump and delivers large air volume to fill oversized tires quickly. A 30 psi (2 bar) gauge shows precise low pressure for Fat-Bike tires while the 75 psi (5 bar) gauge shows higher pressures for MTB tires. An air release button on the TwinHead allows for fine-tuning pressure.