Sharpen both sides of the knife simultaneously, providing faster, sharper, and more durable results Compatible with all Wicked Edge models Monocrystalline Diamonds provide longest lasting abrassive available Perfect for reshaping, reprofiling, and fixing damage on blades The 100/200 Grit Diamond Stones are very coarse and aggressively remove metal. These stones are meant to reshape, reprofile, and fix damage to blades. For routine maintenance, these stones are too aggressive. Each handle has one side of 100 grit (red) and the other of 200 grit (orange). This pack comes with 2 handles and is compatible with all Wicked Edge models.