🔧 Elevate Your Craftsmanship with Precision and Power!
The JNBPRO Countersink Drill Bit Set is a premium 5-piece collection designed for professional-grade metalworking. Made from high-speed steel with 5% cobalt (HSS-Co M35), these bits offer exceptional durability and precision. With an innovative 82-degree design and a corrosion-resistant finish, they ensure smooth drilling and a perfect chamfer every time. Compatible with both hand and stationary drills, this set is essential for any serious craftsman looking to enhance their toolkit.
D**S
Hss countersink
Great product. Yes does cut steel as advertised
S**D
Cold rolled steel was a no-go
I countersunk one hole in cold rolled steel with the 0.25" bit in the drill press and it was toast after that. It could have been a defective one, who knows.
A**R
The size was great.
I like them because they make a nice counter sink hole.
R**M
Appear to be authentic.
JNB Pro appears be Cobalt coated unlike another brand I purchased on Amazon. JNB Pro actually has Cobalt in the written description on the package as well. Unlike the other brand. Hopefully they will work. No projects in the works right now. Just purchased for future projects.
R**Y
Send these out for Cryogenic treatment at Hekimian
I like the multiple flutes. I like the overall pricing. But, I want these to stay sharp for many many years, so As soon as I received them I sent them out for Cryogenic treatment. But, to do it correctly, the temp MUST get down to - 425 Fahrenheit. Therefore only Hekimian Racing Engines manufactured Cryo units can reach these temps. I expect these bits to outlive me... and still be razor sharp.
Trustpilot
1 month ago
2 months ago
