4 Diamond plates (you select the grits)
Diamond honing plates. (approx. 3 x 6 3/4 inches) so there is plenty of surface area to roll your Stay Sharp guide on.
Watch this video on diamond plate care and cleaning.
You are getting 4 plates at a lower price than buying the 3 pack.
Wet/Dry Sandpaper is great but doesn't last very long. Diamond plates offer longer life.