BOSCHCO21 Cobalt Metal Drill Bit Set (21 Piece)
Details
- MaterialHigh Speed
- Cutting Diameter0.5 Inches
- Finish TypeTitanium
- Shank Type3-Flat
- Cutting Angle String135 Degrees
Description
🔧 Drill Like a Pro with Bosch's Cobalt Power!
- ENHANCED GRIP - The three-flat shank design prevents slipping, giving you confidence in every drill.
- UNMATCHED DURABILITY - Crafted from cobalt, these bits are built to last, providing 4X longer life than standard bits.
- PRECISION ENGINEERING - The no-skate split-point tip ensures clean, accurate holes every time.
- VERSATILE APPLICATIONS - Perfect for drilling in stainless steel, cast iron, wood, and plastic—tackle any project with ease.
- COMPREHENSIVE SIZE RANGE - Includes 21 different sizes, laser-etched for easy identification—never be caught without the right bit!
The Bosch CO21 Cobalt Metal Drill Bit Set is a 21-piece collection designed for professionals and DIY enthusiasts alike. Made from durable cobalt, these bits excel in drilling hard materials like stainless steel and cast iron, while also being versatile enough for wood and plastic. With features like a no-skate split-point tip for precision and a three-flat shank for enhanced grip, this set is engineered for superior performance and longevity.
Specifications
| Material | High Speed Steel, Stainless Steel, High Carbon Steel, Cobalt |
| Finish Type | Titanium |
| Shank Type | 3-Flat |
| Cutting Angle String | 135 Degrees |
| Brand | BOSCH |
| Item Dimensions LxWxH | 4.6 x 9 x 1.5 inches |
| Tool Flute Type | Spiral |
| Point Style | Split Point |
| Surface Recommendation | Cast Iron,Metal,Plastic,Stainless,Stainless Steel,Steel,Wood |
| Manufacturer | Bosch |
| Part Number | CO21 |
| Item Weight | 1.1 pounds |
| Product Dimensions | 4.6 x 9 x 1.5 inches |
| Country of Origin | China |
| Item model number | CO21 |
| Size | 21 Piece Set |
| Style | 21-Piece Set |
| Finish | Titanium |
| Item Package Quantity | 1 |
| Measurement System | Inch |
| Included Components | Bit Sizes: (2) 1/16", (2) 5/64", (1) 3/32", (1) 7/64", (2) 1/8", (1) 9/64", (1) 5/32", (1) 11/64", (2) 3/16", (1) 13/64", (1) 7/32", (1) 15/64", (2) 1/4", (1) 5/16", (1) 3/8", (1) 1/2" |
| Batteries Included? | No |
| Batteries Required? | No |
Reviews
F**N
Good quality
Use these to replace the broken bits from my kit.
R**U
Strong drill bit
Strong drill bit. Good cutting. Works perfect
E**S
very Good
As described, replaced a missing bit.
D**N
Good quality bit for stucco and concrete.
This is a perfect drillbit to feed small wires like doorbell through a wall. It’s nice and long and it was perfect for what
B**L
Made in comm't China, not USA
Product info states Country of Origin is "USA" but it is clearly made in China according to the packaging.
P**T
Good
Very good quality.
P**N
Perfect size for 1/4" bolts.
The perfect size for 1/4" bolts. This size will allow 1/4" bolts to go through whatever material your using. I used to "wobble" out the hole for proper fit, but after finding this perfect size up, perfect holes on the drill press, no reaming out at all.
T**.
Very Good Quality
Very good quality drill bit
Common Questions
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