Description
Adiseal Ultimate Metal Drill Bit 4.5mm x 87mm Cobalt
It has been shown to be the best metal drill bit in tests, drilling faster and drilling more holes than any other metal drill bit. 
Best metal drill bit durability test results
| 10mm metal cobalt drill bit | Total number of holes drilled |
| Adiseal Ultimate cobalt | 135 holes |
| Milwaukee cobalt red | 75 holes |
| DeWalt Extreme cobalt | 39 holes |
| Bosch cobalt | 15 holes |
| Makita cobalt | 12 holes |
Impressively the best metal drill bit Adiseal Ultimate, drilled more holes than the best bits from the top 3 worlds biggest brands combined.
(Milwaukee cobalt red) 75 + (DeWalt Extreme cobalt) 39 + (Bosch cobalt) 15 = 129 holes
Adiseal Ultimate 135 holes vs Top 3 competitor combined 129 holes.
Adiseal Ultimate is a drill bit for metal but it is also suitable at drilling many other materials including:
- Stainless steel
- Hardened steel
- Cast iron
- Copper
- Aluminum
- Metal
- Wood
- Plastic
- Fiberglass
- Plus many other materials
Adiseal Ultimate drilled over 3 times the number of holes than the best bit from DeWalt and 9 times the number of holes than the best bit from Bosch
Best metal drill bit speed test results
As well as drilling more holes than any other metal drill bit, Adiseal Ultimate also drills faster than any other bit. In the same test as above, we also measured the time it took to drill each hole. We did this for the first 10 holes and recorded the average.
| 10mm metal cobalt drill bit | Average time to drill each hole for first 10 holes |
| Adiseal Ultimate cobalt | 31.7 seconds |
| DeWalt Extreme cobalt | 38.5 seconds |
| Milwaukee cobalt | 55.8 seconds |
| Makita cobalt | 69.9 seconds |
| Bosch cobalt | 132.4 seconds |
Adiseal Ultimate is a drill bit for metal but it is also suitable at drilling many other materials including:
- Stainless steel
- Hardened steel
- Cast iron
- Copper
- Aluminum
- Metal
- Wood
- Plastic
- Fiberglass
- Plus many other materials
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