Every shop, no matter how small, can do work on the Mac Pherson Strut assembly found on virtually all modern domestic and imported vehicles. The S & G 62900 "Strutter" can be: Used with impact wrench or hand tool. Used ON or OFF the car! Sells for a fraction of other types. Each set contains complete instructions and a safety kit. The one piece cold headed bolts are made of chromiumolybdenum alloy steel. The nuts are Grade 5. Do not use on General Motors "A", "C", "J" or "X" Body cars. Not for use on any unusually large MacPherson Strut springs which have a coil outside diameter of over 6" or a wire diameter larger than 5/8".