The Bontrager Air Support HV MTB Pump has a large chamber so you can inflate tyres up to 60 psi with ease. The reversible valve head means you can quickly switch from Presta to Schrader without a hassle. Minimize your time off-the-bike during trail-side flat fixes with the high-volume Air Support HV hand pump. This durable pump fits easily into your hydration pack, or use the included bracket to mount it under your bottle cage. Features Durable, high-quality MTB pump with larger volume chamber for higher volume tyres Inflate larger tyres to 60 psi (4bar) with little effort Reversible valve head fits both Presta & Schrader valves Fold-out lever securely locks pump head to valve Mounting bracket fits easily under bottle cage