With 4 cars in the fleet I sometimes grabbed the 22mm head when removing the wheels. I've been using one of these sets for several years so I disassembled it and added it to the collection at this size. Decent head - 22mm as described. As with others, there is a trade-off between the thickness of the metal and the thickness of the protective case. It seems a bit thicker than I expected (it fits my wheels just right), but it works.