The Rothenberger 80105 Radiator Spanner 1/2″ (12mm) no.2 has grooves in one end for internal lug valves, with the other end as an air vent key.

Rothenberger 80105 12mm Radiator Key is designed with grooves in one end for internal lug valves with the opposite end designed as an air vent key.

The Rothenberger Radiator Key features a clever design that is designed to optimise leverage whilst allowing access to confined spaces.