POWERTEC USA
Industrial 1/2-Inch Cobalt Jobber Drill Bit Set (QDB2012)
High-Precision Drilling for Hardened & Abrasive Metals
The POWERTEC QDB2012 is a professional-grade set of two 1/2-inch Cobalt jobber drill bits, specifically precision-engineered for the most demanding metalworking applications. These bits are the definitive choice for fabricators and mechanics working with **stainless steel, cast iron, titanium, and high-nickel alloys**. Featuring a specialized **135-degree split point tip**, these bits are designed to be self-centering, meaning they bite into the material immediately upon contact. This eliminates the need for a center punch and prevents the "bit walking" or wandering that often ruins workpieces during large-diameter drilling.
Constructed from **M35 grade high-speed steel with 5% Cobalt**, the QDB2012 provides industrial-standard heat and wear resistance. The addition of cobalt ensures that the cutting edge remains sharp even when subjected to the intense thermal friction generated by high-tensile materials, effectively preventing "burn-up" and extending the service life of the bit. These bits feature a universal straight shank that works flawlessly in both keyed and keyless chucks. Whether you are performing structural repairs or precision fabrication, this 2-piece set delivers the high-torque penetration and low cost-per-hole required for professional results.
- M35 5% Cobalt Steel: Engineered for extreme heat resistance when drilling in tough, abrasive metals.
- 135° Split Point Tip: Penetrates quickly with less pressure; self-centering design eliminates bit wandering.
- Heavy-Duty Jobber Length: Provides the reach and structural rigidity needed for deep-hole drilling in solid stock.
- Sharpenable Edge: High-quality steel allows the cutting lips to be repeatedly reground for peak performance readiness.
- Universal Chuck Fit: Standard 1/2" diameter bits compatible with industrial drill presses and heavy-duty hand drills.
Technical Specifications
- Drill Bit Diameter: 1/2 Inch
- Point Angle: 135 Degrees (Split Point)
- Material: M35 High Speed Steel (HSS) with 5% Cobalt
- Shank Style: Straight (Round)
- Length Type: Jobber Length
- Pack Quantity: 2 Individual Drill Bits
Essential Metalworking Applications
- Stainless Steel Plate
- Hardened Cast Iron
- Nickel & Cobalt Alloys
- Titanium Drilling
- Heavy Structural Steel
- Aluminum & Brass
- Tough Plastics & PVC
- Abrasive Composites
POWERTEC is a leading manufacturer of high-quality woodworking and metalworking tools, accessories, and replacement parts. We are committed to workshop innovation, providing the durable, intuitively designed components that help craftsmen build with showroom-quality results.