Sizes in the kit are 1/4-20, 1/4-28, 5/16-24, 3/8-16, 3/8-24, 7/16-20, 1/2-20 and 9/16-18. Simply screw the stud into the tool hand thread into the part and tighten with a wrench or socket until the stud bottoms out against the shoulder. Once your done simply back off with the wrench or socket.
Very simple to use and the racer only has to have one 3/4" wrench or socket to use the whole kit. The tools can be shortened for different stud lengths by the racer if needed. Each installer kit includes eight stainless steel installers.
Stud installer kit comes in a handy plastic carrying case.