Lever lock tension tool. By Brummie Lock Picker. 15:43:
https://www.youtube.com/watch?v=9d82f0Fu3Xg
Previously:
https://www.homemadetools.net/forum/...375#post154535
https://www.homemadetools.net/forum/...230#post153991
https://www.homemadetools.net/forum/...183#post145718
https://www.homemadetools.net/forum/...471#post142836
https://www.homemadetools.net/forum/...793#post136975