The Park Tool VC-1 Valve Core Tool is so slight, it is easy to overlook its stature as a venerable shop standard. This small, handy tool designed to remove and install Schrader and Presta valve cores and to remove and install Presta valve extenders with 5mm wrench flats. The VC-1 is invaluable both for seating tubeless tires and topping off sealant through Presta valves.
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