The Topeak Roadie 2Stage mini pump is perfect for your road bike. With its innovative 2Stage pressure selector, you can choose between high volume or high pressure to quickly inflate your tires. This compact pump easily fits into a jersey pocket for convenience.The pump features a Presta valve with a thumb lock and an integrated dust cap. It has an aluminum barrel and a capacity of 160 psi / 11 bar. The pump operates in two stages: Stage 1 for 0 - 75 psi and Stage 2 for 75 - 160 psi. With a volume per stroke of 40.8 cc in Stage 1 and 11.2 cc in Stage 2, you can efficiently fill your tires. The pump's handle is made of aluminum for durability. The pump also comes with a side mount bracket for easy storage (Art No. TRK-PC01). It measures 16.2 x 3.2 x 2.5 cm / 6.4 inches x 1.26 inches x 1 inch and weighs 89 g / 3.14 oz.With the Topeak Roadie 2Stage mini pump, you can keep your road bike tires inflated effortlessly.