The plain non-woven semi coarse polishing flat wheel in green.
Sized 6 x .75 x .5 used on a standard 6″ buffer from Harbor Freight. They can be squared up every 40-60 holsters or so by using a standard belt sander to flatten the wheel evenly. Material is best described in texture to that of a green brillo pad you would normally use for dishes.
Approximately 250 holsters per wheel as tested dependent upon technique.