Fully CNC machined Presta-specific valve head offering a quick and precise engagement with Presta valves. Features pressure bleed button (CAD) for adjustment during inflation and does not blow off under high pressure. Comes with 2 x hose adapters : Black O.D. Ø8.5 x I.D. Ø3.5-4 mm & Grey O.D. Ø10 x I.D. Ø3.5-4 mm Features Material: CNC machined aluminium / Zinc alloy / Stainless steel / High Polymer. Size: 70 x 60 x 19 mm. Adapters: Black O.D. Ø8.5 & Grey O.D. Ø10 x I.D. Ø3.5-4 mm.