About the Park VC-1:
A valve core tool is vital for running tubeless tyres, allowing you to easily remove the valve core to add or remove sealant to the tyre. This Park model is made of strong aluminium and works on both presta and schraeder valves, as well as valve extenders on deep rim wheels.
Hexagonal sides allow the use of a 5mm wrench which can be useful on valves where sealant has locked the threads. Perfect for in the workshop but small enough to throw in a saddle bag or riding pack.