Check the listing for details. 8pcs Carbide Insert Seat Shim MS1203 Turning Tool Accessories Thread Shim Seats. Condition: New. Listed at 13.50 USD. As the support of the insert, the turning tool shim can effectively protect the turning tool, avoid collision with the tool body, and improve the service life of the turning tool holder of the lathe.Made of powder alloy, it has high strength and hardness, high wear resistance, good toughness, heat resistance, and corrosion resistance.It is suitable for indexable turning tools and can be used for rough turning, semi-finishing, and fine-tuning of various materials according to the model of the indexable turning tool.Place insert seat shim under the turning tool so they fit snugly. The cutting resistance of the turning tool can be evenly transmitted to the tool Lathe through the seat shim, so that the cutting resistance under the cutter head is not too large and deformed.