The Dormer G136 Series HSS-Co countersink is expertly designed for precision machining, featuring a 90° angle that ensures clean and accurate countersinks. With a metric diameter range from 4.30 to 10.00mm, it is versatile for various materials. Its three-flute construction enhances chip evacuation, while the round shank allows for a secure fit in tool holders, making it an essential addition to any toolkit for efficient machining tasks.