This Magnum Super Premium 21/64″ drill bit outperforms cobalt drills in work hardening stainless steel and other tough drilling applications. The nitro-carburized flute has an increased Rockwell hardness. The flatter point takes a smaller chip. More torque is directed to a smaller area. This allows drilling into materials with hardness of over 30 on the Rockwell “C” scale. The split point design gives accurate starting without the use of a center punch. This bit has 135° point taking a smaller chip, resulting in less heat. Also sold in pack of 6 drill bits.
• Type 190-AG
• Heavy-Duty Super Premium NAS 907B
• Nitro-carburized flute
• 135° split point design
• Friction is reduced by amber gold surface treatment
• For stainless steel applications
(1) Super Premium 21/64″ Metal Drill Bit