Remanufactured black plastic charger key.   Fits most Sparklets models from around 1920 through to 1981, when Sparklets manufacturing ceased in the UK.  This includes the glass bodied Types C and D, early and late Streamline models, Hostmaster Mks. 1, 2 and 3 and Aquarius models.   However, this item does not feature a functioning tool to remove the neck sleeves in the Hostmaster Mk. 3;  another charger key similar to this does feature this tool.