48-89-2311 Red Helix Cobalt Drill Bit, 7/32 In., 3-flat Shank

The Milwaukee RED HELIX 48-89-2311 is a cobalt steel drill bit engineered for extreme durability and long life in hard metal applications. Cobalt drill bits are ideal for drilling through stainless steel, high-alloy steel, cast iron, and other tough materials where standard black oxide bits wear out quickly. This jobber-length twist drill bit is designed to provide precision starts, prevent bit walking, and maintain sharpness through extended use.

Professional and DIY users rely on cobalt drill bits when tackling demanding metal fabrication, maintenance, and repair projects. Whether you're working on straight or curved surfaces, this bit handles a wide range of twist drilling applications with consistent performance.

Features and Benefits

• Variable Helix Design: An aggressive 35-degree helix angle tapering to 15 degrees enhances chip removal and reduces heat buildup, allowing the bit to stay sharper longer during continuous use.
• 135-Degree Split Point Tip: Delivers a precise start without walking, enabling fast and accurate holes in hard metals, stainless steel, and alloy materials.
• Cobalt Steel Construction: Provides exceptional hardness and heat resistance for demanding applications where standard black oxide bits struggle, with up to 10X the life in hard metal work.
• Thunderbolt Web Design: A thicker core structure enhances durability and protects against side-load breakage during heavy use.
• Versatile Applications: Suitable for drilling stainless steel, high-alloy steel, cast iron, and general twist drilling tasks across metal fabrication and maintenance work.

Specifications

• Brand: Milwaukee
• Model: 48-89-2311
• Diameter: 7/32 in
• Overall Length: 3-7/8 in
• Flute Type: Twist, 2-Flute
• Shank: 3-Flat
• Material: Cobalt Steel