These indexable carbide grooving inserts are an absolute game-changer for any machinist tackling stainless steel. The GTN-3 SP300 coating ensures a longer lifespan for the cutters by minimizing the wear and tear of constant use. The CNC lathe cutters fit perfectly onto any lathe with ease and efficiency. The best part about these cutters is their ability to work with precision and consistency, no matter how tough the stainless steel material may be. They provide a clean cut every time, without any jagged edges or rough finishes. Overall, these carbide grooving inserts are worth their weight in gold for any serious machinist. They make the machining process smoother, faster, and more accurate, leaving plenty of time for a well-deserved coffee break.