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The Milwaukee 48-89-2303 Thunderbolt Cobalt Drill Bit is engineered for precision drilling in hard metals, including stainless steel, automotive parts, and specialty metal applications. This cobalt bit is designed for challenging drilling tasks where durability and accuracy matter, delivering consistent performance across tough jobs while resisting breakage.
The RED HELIX design features a variable helix angle that shifts from an aggressive 35 degrees down to 15 degrees, enabling rapid chip removal and limiting heat buildup so the bit stays sharper longer. The 135-degree split point tip ensures fast, precision starts with no bit walking, eliminating frustrating deflection and delivering accurate holes on the first try. This jobber bit provides up to 10 times the life of standard black oxide bits, making it an excellent choice for stainless steel panels, fastening automotive components, and metalworking applications.
Features and Benefits
- RED HELIX Technology: Variable helix angle removes chips aggressively and reduces heat buildup to keep the bit sharp longer.
- 135-Degree Split Point Tip: Delivers precision starts and prevents bit walking for fast, accurate holes without deflection.
- Extended Tool Life: Provides up to 10 times the life of standard black oxide bits in hard metal applications.
- Cordless Drill Ready: Round shank design ensures smooth, secure operation in cordless drill chucks.
- Versatile Jobber Bit: Suitable for all twist drilling applications while excelling in stainless steel and other hard metals.
Specifications
- Brand: Milwaukee
- Model: 48-89-2303
- Diameter: 3/32 in
- Overall Length: 2.68 in
- Shank Diameter: 3/32 in, round
- Bit Type: Jobber bit, twist flute
- Tip Angle: 135-degree split point
- Material: Cobalt with RED HELIX technology
- Packaging: Skin carded