The Byrd Shelix Insert KN400 is a high-quality woodworking supply designed for CNC machining and metalworking. Made by Byrd Tool in the United States, this 4-edge carbide insert features a 100mm radius and measures 15mm x 15mm x 2.5mm. This case of 8 inserts is perfect for woodworking and manufacturing projects that require precision and durability. With the Byrd Shelix Insert KN400, you can expect superior performance and long-lasting tool life