Originally Posted by
Barry2
Some pumps have a extension tube that screws on to a Presta valve.
Upon unscrewing the extension they can loosen the core.
If you screw your CO2 inflator to the Presta valve you can freeze the core to the inflator and then remove the core with the inflator. Whooooossssshhhh. Oops! :-\
tiny needle nose will tighten valve cores and may have other uses (removing thorns and similar.)