The Scottool Radiator and Valve Key.
One end of this key is machined into 10mm square for installAtion of 1/2in BI plugs and 1/2in vent plugs.
The other being used for installation of internal hexagon valves.
1/2in section.
High quality hexagon keys, zinc plated for corrosion resistance.
A must for installing or maintaining heating
systems.