Countersink: 1" Head Dia, 100 &deg MPN:18681

The 1/4 Diameter, 3-Flute 39/40/41 Left Hand Cutting End Mill is designed for use in machining non-ferrous materials such as aluminum, brass, bronze and plastics. With a diameter of 1/4, it's suitable for precision cuts on thin-walled parts while its flutes minimize heat buildup, extend tool life and provide smooth finishes. Its 39, 40 and 41 Helix angles ensure quick milling action while providing increased surface speed for a wide variety of applications in industries such as aerospace, medical, automotive, and electronics where precision is key. The left hand cutting design allows for improved chip evacuation and ease of use when engraving and carving operations. Its universal thread size makes it compatible with most tool holders and equipment available on the market, making it a versatile addition to any machinist's toolbox.