Discover the secrets to milling HSS drill bit flutes with our CNC Polish Thread Straight Flute DIN352 HSS Hand Tap. Made from premium high-speed steel M2/M35, this hand tap is designed for high durability and precision in materials like aluminum, copper, brass, carbon steel, and stainless steel. Perfect for CNC lathe machinery, it offers bright finish, tin-coated, and other high-performance coatings.