Cal-Hawk Disc Brake Piston Cube
AAPDBC
   It's a 3/8 Dr. Spanner Wrench.
* Chrome-Molly Steel, Heat Treated and Tempered.
* Chrome Plated.
* Unique Cube Design Provides Five Drive Pin
   Configurations to fit Most Applications.
* A Must for Relining Most Rear Disc Brakes.
* Rotates Pistons Back Into Brake Calipers when Replacing Pads.