Chamfer Countersink Bit Set is simple, all-purpose tools made of Cobalt that provide flawless countersinking and deburring. The chatter-free cutting action requires minimal power. The micro-smooth CNC precision ground construction produces clean, smooth cutting without smearing on a variety of materials.
The tool especially excels in countersinking or deburring holes in aluminum, plastics, and other nonmetallic. Cobalt steel tools are similar to high-speed steel, but with more cobalt for improved performance when cutting harder metals such as stainless steel or nickel alloys.
Uncoated tools feature just the base substrate without any additional treatment or coatings and are suitable for a wide range of applications. Round shanks allow use with a wide variety of tool holding systems. When running in a counterclockwise direction (right-hand cut) spiral fluted tools evacuate chips up and out of the cut to reduce clogging. 82-degree angle.
SIZE: The drill bits can drill hole size (four type): 0.08"-0.19"(2mm-5mm) 0.19"-0.39"(5mm-10mm) 0.39"-0.59"(10mm-15mm) 0.59"-0.79"(15mm-20mm)
FIT:This 4 pieces Countersink and Deburring Tool Set is ideal for cutting through metal, stainless steel, wood, and plastic quickly and easily
MATERIAL:High-speed steel 4241. It cuts cleanly and smoothly without chattering or tear-out, using both drill press and hand held drills.
DESIGN: Inside chip removal design makes cutting much faster, cleaner, and quieter. Round shanks allow use with a wide variety of tool holding systems
I work in a production woodshop and needed a new countersink. I bought a 5 flute countersink from the Depot and it just didn’t work for what I needed. A coworker let me use one of his that was the same style as this one and I had success with it so I bought this set. IMO it produces cleaner countersinks than the typical fluted designs.
worked very well for my projects wood aluminum and some sheet metal no issues with the bits they seem to hole edge quite well have used them more than had originally planned.
a really great tool for making a hole bigger. I had some gunnel rod holders that I wanted to use to hold a boat pole, but the hole wasn't big enough for the handle. This was just the tool. Plenty sharp to cut through the plastic. I'll be glad to have this in the drill box for those times when I have to make a hole bigger...
Amazingly big, fast and clean! I would suggest a face shield on steel studs though. Works great on thin and thick gauge studs so I assume stainless steel would be no different. It stays centered well too, even though I use a mid torque impact gun
I got these to drill some countersink holes in the corners of a plastic pegboard. They worked really well. When working with plastic, may be a good idea to let the bit cool down between drillings but these work great for taking your work up a level and giving it a professional finished look.
These things work awesome...hold up better than and you can't over drill the depth of the counter sink.
To be honest I was very impressed by the durability of these countersinks . I've had my set for over 2 years and I use it weekly . I am leaving a review 2 years later because today I'm ordering 2 more kits before they don't sell them anymore at some point ! That's how much I like these...... I HIGHLY RECOMMEND!!!
These or should I say this design work amazingly well for all applications chamfering, countersinking and deburring. Leaves a very clean cut and cuts very fast and predictable much better than my old countersinks with 4 or more cutting edges. I will see after some time if they hold up but for this price even if they don't, I'll replace them in order to have a working set on hand.