The Zéfal name is synonymous with the HPX Classic frame pump. A durable, all-aluminium construction, available in 4 sizes. The HPX spring locking system to fit any frame, without the need for straps or secondary fixings, ensures it"s capable of pumping up to 12 bar / 174 PSI. Pressure: 12 bar / 174 psi Barrel: alumimium Stem: alumimium Handle: alumimium Connection: reversible Presta / Schrader Thumblock lever: aluminium Weight: 240 g (size 3) Length: Sizes-(1) 17-18.5, (2) 19-20.5, (3) 21-23, (4) 23.5-25.5 Mounting: HPX system, unique HPX handle spring locking system Color: Silver/Black Size: 4/23.5-25.5Mfr Part: HPX4C