Brake Disc Run-Out Kit - Dial Gauge Kit

Check for ball joint wear and brake disc run-out quickly and easily.
Locking pliers secure to any convenient position enabling DTI gauge to be placed against brake disc.
These should be used every time you fit or refit brake discs.
Hardly any mechanic can be bothered but it is the correct way to ensure that you get no problems with shaking after a month or 2 of driving and blaming the brake disc quality rather than the poor fitting procedure.

See here for how to use
http://www.youtube.com/watch?v=H_1ySs7liS4
or here shows what the consequences are
ie having to have the discs skimmed in a pro-cut lathe
http://www.youtube.com/watch?v=5N-BAQ8LUUg

Kit includes
Metric calibrated DTI gauge.
Mole Grips
Extended Lockable Arm