Fitment is for Toyota 4Runner, Lexus GX, and other 6-lug trucks.

M-Spec signifies US Market only and these come with engraved rim edges.

16x8.5 -10
6x139.7
Flat Black

"What is the difference between Flat Black and Blast Black?"
In photos and in person, they look identical, however Flat (Matte) Black has a smooth surface to the touch whereas Blast Black has a slight rough feel.

Valve stems included.