Finished MT3 Shank Fly Cutter For Milling Machine A 3/8" Sq x 3" Inch Square Hss Tool Bit Is Included Made Of Tool Steel. MT3 Shank: Provides a secure fit in your machine, ensuring stability during operation. M12 x 1.75 Drawbar: Compatible with a range of setups, allowing for easy attachment and detachment. High-Speed Steel (HSS) Bit: Engineered for durability and sharpness, ideal for achieving smooth finishes on various materials. Versatile Application: Perfect for face milling, creating flat surfaces, and achieving precise cuts on a variety of workpieces. Easy to Use: Designed for quick adjustments and simple operation, making it suitable for both professionals and hobbyists.