The Silca Impero Ultimate Frame Pumpmerges high-tech modern materials and manufacturing with the full aluminium construction and durability that was a hallmark of the original Impero.Impero Ultimate represents the Ultimate in design, functionality, security and longevity.Silca Impero Ultimate Frame Pump FeaturesFlexWing Technology Fits Tube size between 1 (25mm) and 2.5\" (60mm)Silicone Bumpers for secure fit and Ultimate Paint protectionMost efficient Inflation of any Portable Pump (112 strokes = 100psi size Small)2 Stage Sealing Advanced Elastomer Head - No fussy lever to mess with.100% Full metal construction - No plastic parts to break, bend, slip or rattle and covered by SILCAShieldWeights: SM: 256gm M: 267gm L: 278gm XL: 289gm\"