Diamond Kits are very aggressive and are best for quickly setting an edge or resetting the edge to a different angle. Diamonds remove steel much faster than their alumina oxide counterparts. For knife enthusiasts, you might want to invest in one Extra Fine or Supper Sapphire ceramic hone to polish your blade to a mirror finish and a serrated hone to truly complete your ultimate kit. The ultimate in knife sharpening systems technology. It is safe, easy and convenient to use. The Lansky Controlled-Angle Sharpening System is designed to give your blade a professional, razor sharp edge every time. This universal device, from cutlery sharpening company Lansky, is a two-piece mount that optimizes Lansky Sharpening Systems by providing a strong base and increased sharpening leverage. It's made of lightweight yet remarkably strong aluminium with a pre-drilled base. The entire unit stows in the included kit case for easy storage and transport, as well.