Draper 35109 Gas Bottle Key

Draper-35109-Gas-Bottle-Key-Draper-35109-For-general-use-on-gas-equipment-andndash-20mm-or-27mm-open-end-Can-be-used-on-6-4mm-square-drive-cylinder-valves-br-Draper-35109-Gas-Bottle-Key

Price: 5.38 from Rapid Online Rapid Electronics Ltd.