48-89-2309 Thunderbolt Cobalt Drill Bit, 3/16 In.

The Milwaukee 48-89-2309 Thunderbolt Cobalt Drill Bit is a twist-flute jobber bit designed for specialty drilling in hard metals like stainless steel. Cobalt construction delivers extreme durability and provides up to 10 times longer life compared to black oxide drill bits. The bit's aggressive variable helix design optimizes chip removal and reduces heat buildup, keeping the cutting edge sharper longer during extended use.

The 135-degree split point tip ensures precision starts and prevents walking for fast, accurate holes. With a sturdy cobalt core that resists breaking under pressure, this 3/16-inch diameter bit delivers consistent results across demanding drilling applications.

Features and Benefits

• Cobalt Construction: Provides up to 10 times longer life compared to black oxide drill bits in hard metal applications.
• 135-Degree Split Point Tip: Delivers fast, precise starts and prevents walking for accurate hole placement.
• Variable Helix Design: Aggressive helix angle enables rapid chip removal and limits heat buildup for extended sharpness.
• Works with Battery-Powered Drills: Seamlessly compatible with cordless drill applications for on-the-go tasks.
• Durable Thunderbolt Core: Resists breaking and ensures reliable performance under pressure.

Specifications

• Brand: Milwaukee
• Model: 48-89-2309
• Diameter: 3/16 inch
• Shank Diameter: 3/16 inch
• Overall Length: 3.54 inches
• Type: Jobber bit, twist flute
• Material: Cobalt
• Tip Design: 135-degree split point
• Helix Design: Variable helix with aggressive angle