Rushmore USA 6 Flute 90 Angle M42 8% Cobalt TiN Coated Countersink, 5/16″ Size, 1/4″ Shank Diameter, 2″ Overall Length

• TiN coated for higher surface hardness and better lubricity.
• Excellent for countersinking abrasive, high strength, heat resistant and other difficult to machine materials.
• Chatterless Design
• Workpiece Material Range: Steel, Stainless Steel, Cast Iron, Plastics

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