Our wheel stud installer kit features installers makes it easy to install wheel studs, featuring five most common thread sizes, giving you an universal fit while eliminating the need for lug nuts to install wheel studs Simply use a 29 mm socket with an impact wrench or ratchet, and the kit has what you need to quickly install wheel studs fully into the wheel hub Spacer and washer included in the kit to help protect wheel hub during install Rethreaders included to help clean and repair damaged wheel studs 12-pice kit comes with (5) wheel stud installers and (5) rethreaders in these sizes: M14 x 2.0, M15 x 1.5, M12 x 1.5, M12 x 1.25, 1/2" x 20, (1) spacer, and (1) washer. Comes with our own Mechanic's Tray which fits right into any standard tool chest. Tray dimension: 16 in. L x 10.5 in.