MULLER Tetrabor grindstone sharpener type 8504

Design: Tetrabor®-honer made out of pure, sintered boron carbide. Only the extreme hardness (ca. 35000 N/mm²) and resistance of boron carbide gives an efficient edge to grinding wheels. The grain does not slip on bonding, rather cuts it smoothly. For grinding wheelsup to 300 mm Ø.

Note: Only hone the edge, not the flat surfaces.