If you’re looking to pimp your pump, this is probably the best way to do it…Not everyone can afford, or is willing to shell out, for the Ultimate, but with this little beauty you can at least take advantage of Silca’s range of pump heads. Instantly flip between the Presta head to the Hiro on any pump. This nickle plated stainless steel locking chuck is ethically produced and fits all 1/4 and 6mm pneumatic hose. There aren’t any plastic parts to wear out so it’ll be around when you finally do upgrade you pumping station.