Larger items being ground into smaller more uniform material that can be re-used in a manufacturing process requires the use of a Granulator. The Granulator knives need to be made out of a high quality tool steel and needs to hold it's edge and stay sharp. Hole and slot placement and spacing need to be accurate and consistent on both the Bed and Rotor knives. There are many types and models available. If you require something not listed please contact us through the contact form for availability and pricing.of Fly knives and Stationary knives for your AEC, Ball & Jewell, Conair, Cumberland, Foremost, Gloucester, Granutec, Nelmor, MPG, Rapid, Rotogran, Polymer and Wortex just to name a few.