• Ideal for sharpening poultry vent cutter blades, from 0.875 to 2.0 inch (22 - 51 mm) diameter blades. • Accurately sharpens badly damaged or worn blades as new. • Sharpens blades to original design specifications - reduces material removal for longer blade life. • Precision ground blades reduce operator fatigue, also wear and tear on equipment. • Minimal training required. • The PVBG-1 produces perfect blades every time - nothing else is required.