Description
Description
Bosch BL4139 Description
This 12-pack of Bosch 3/16 in. x 3-1/2 in. fractional jobber black oxide drill bits is built for fast, general-purpose drilling in metal, wood, plastic, and composite materials. Each bit features a split-point tip for starting on contact with less walking, plus a speed helix design that helps reduce heat and extend bit life.
Bosch BL4139 Includes
- (12) 3/16 in. x 3-1/2 in. Black Oxide Drill Bits
Bosch BL4139 Features
- Speed helix design drills three times faster than standard bits
- Split-point tip starts on contact to help reduce walking and eliminate the need for a center punch
- Black oxide construction supports easier drilling, reduced heat, and extended bit life
- Lasts 50% longer than high-speed steel
- Fractional jobber length design for general-purpose drilling applications
- For use in steel, copper, aluminum, brass, oak, maple, MDF, pine, PVC, polycarbonate, acrylic, ABS, nylon, and composite materials
Bosch BL4139 Specifications
| Bit Diameter | 3/16 in. |
| Bit Material | Black Oxide |
| Bit Type | Twist |
| Length | 3.5 in. |
| Minimum Chuck Size Required | 3/8 in. |
| Package Quantity | 12 |
| Surface Coating | Black Oxide |
Toolup Part # :
28741
WARNING: This product can expose you to chemicals, which are known to the State of California to cause cancer and birth defects or other reproductive harm. www.p65warnings.ca.gov
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