Though it weighs just 2.27 ounces this 6-inch road pump achieves an astounding 160 psi. Highly efficient pumping action. CNC aluminum handle and barrel sheath. Internal bayonet handle lock. Pocket sized. Includes seat-tube mounting bracket and hardware. 65 grams. Diameter 0.7 in. Length 6.25 in. PSI 160 psi. For Presta valves only.