I prefer a deep socket nut set
Love a really good deep nut
Says they are made from Chrome Vanadium Steel. Chrome molybdenum is better because its softer and is less likely to shatter when used with an Impact gun. For general use with a manuel bar these should be fine and protect alloys. As the sizes practically match spark plugs I was disappointed that they wouldn't fit GM plug holes due to extra quickness of the white nylon/plastic walls of the socket. Mine have rubber inserts to protect a spark plug head, may work on other engines. They are fine for the purpose intended and protect the alloy wheels. Good price.