It is suited for: planer, molding knife, vertical milling cutter and circular saw disc in woodworking cutter Wheel Specification: Depending on new cutter grind and re-grind will be different in recommended specification Different wheel substrate for a grind can be classified as 1.2. Bakelite Substrate: vibration absorption, a reduction of wheel abrasion and the improvement of surface roughness. Al-Alloy Substrate: Higher rigidity and suitable for higher grinding precision.