KATSU 1/2 Inch Socket Set 12Pcs, 10-24mm Metric Drive with 24-Teeth Quick-Released Ratchet Wrench and 5" Extension Bar, High Grade Chrome Vanadium Steel, Auto Repairing Garage Tool 420343 : Amazon.co.uk: DIY &
36mm Bi-Hex Deep Impact Socket - 1/2 Inch Sq Drive - Chromoly Wrench Socket | DIY at B&Q
1/2 inch Square to 1/4 inch Hex Ratchet Socket Spanner Wrench Socket Adapter | eBay