Are they typically aluminum? I need to do some grinding. Looks like this;
I need to grind the one on the right, the Baer caliper. It's about 1/16" too big for my 18" wheels so I need to knock a hair off of those ridges. Going to rent a hand grinder and need to buy the right disk.

I need to grind the one on the right, the Baer caliper. It's about 1/16" too big for my 18" wheels so I need to knock a hair off of those ridges. Going to rent a hand grinder and need to buy the right disk.