B-500 replacement beveller inserts - includes 6 Inserts - 1 Anti-Seize Grease, 2 Screws with Case. If the cutting edges are dull, worn or chipped, cutter inserts will need to be rotated or changed. Increased cutting time is an indication of cutter insert wear. Use care when handling inserts. Do not allow the inserts to touch each other or any other hard surface, they can be chipped or damaged