Amana Tool 55227 Carbide Tipped 82 Degree Countersink Set with Adjustable Drill Bit Depth Stop and No-Thrust Ball Bearing 3/8 Dia x 1/8 Drill Dia x 1/4 Inch Quick Release Hex Shank

Simple to set and use. has worked great so far on maybe 30-40 countersunk holes. Recommend this vs the junk you find in big box stores in countersink sets. Not as great as a $200 Zephyr, but workable for us janes and joes.

It took me a long time to decide to pay a significant amount for a countersink bit and I am glad that I finally did! This bit is great. Easy to adjust and cuts nice countersunk holes. The bearing system to stop the height adjustment from rotating with the bit when it contacts the wood is smooth. No marring of the wood surface and provides a consistent depth each time. Great product!

I use this on every project. From cabinets to floating shelves, this thing is great. Easy to adjust, doesn’t mark up your piece either. For that professional look, grab one of these.

I fall for alot of gadgets - most don't live up to the hype, or they just flat-out suck! But THIS little thing? Absolutely awesome! It makes every countersink hole perfectly consistent. It's simple, effective, and honestly just makes me so happy every time I use it. Totally worth it! (Imma buy more before they yank up the price ;)

Amana makes two versions of this product, a more expensive brass ring, ball bearing model (~$44.00) and a less expensive model (~$33.00) which is lighter and has a “low friction” depth limiter ring made out of plastic. Some reviewers complained the brass ball bearing model left marks on the wood, so I imagine the low friction version is a response to that. I tried both models side-by-side and found the original brass, ball bearing model is superior in every way, in spite of the price difference. The reasons are: Both have a carbide tipped countersink that operates the same way, but the cheaper, low friction model has excessive runout and chatter. My video clip and photos below illustrate this difference. The low friction version has a continuous plastic ring which traps drilling chips beneath the plastic ring as the ring contacts the wood, and the trapped chips under the ring spin around and mar the surface of the wood. The brass ring version has two interrupted sections of the ring that help eject the chips and it didn’t mar the wood surface in my tests. In a drill press, both versions showed acceptable runout (the brass version was exemplary) but in a hand-held DeWalt drill, the runout on the cheaper version was excessive. The photo illustrates the difference between the quality of the countersink holes of each version. The brass version produced a noticeably cleaner countersink every time, while the cheaper plastic ring version produced countersinks with obvious chatter marks. You can hear the chatter in the plastic ring, non-ball bearing version. There is a qualitative difference in “feel” of each version. The ball bearing version feels like quality, while the non-ball bearing version feels like a light-weight compromise. For the $11.00 difference, I’d buy the more expensive, heavier, ball-bearing model. I returned the plastic ring versions due to the runout and chatter and kept the ball bearing versions. For uses where top quality appearance of countersinks doesn’t matter, either version would be okay. You get what you pay for.

If you need to counter sink your screws, this is the tool to use. The design prevents the counter sink from marking up your project. I'm really not a fan of Allen wrench set screws because they have a tendency to slide, and they are really difficult to tighten without stripping the inset. But these don't seem to have that problem. I can easily tighten the set screws without any issue. The depth stop is easy to use and remains firm without slipping. I don't like how they only show the depth adjusting screw side of the bit, they should show both sides.

I've only used this for a few holes, but thought I would share my initial opinion. I've used several countersinks on wood screws and I'm primarily concerned with how smooth the outer edge of the hole is and how repeatable the countersink depth is. I have tried the Snappy, the cheap Ryobi, and a few others. The best I have found until now are sold by Lee Valley and made by an Israeli company. With this product I obtained clean holes with no edge breakout on pine plywood. I looked at the package and it says "made in Israel". I suppose Amana has a deal with the same company. I did not test counterboring as you would for a plug covering the screw. No scratching of the surface as the collar does not rotate. If you adjust the depth stop, you have a perfect hole that just fits the screw head every time. The only downside to this product is that the collar completely blocks your view of the progress of the countersink. You are drilling blind at this stage unless you can move your head down to see under the workpiece. Just takes some getting used to. The depth is controlled by the collar, so you don't really need to see what's happening. You do need to really slow down the drill as the countersink portion is engaged. In general, countersinks like to cut slow if you want a smooth edge. I try for about 200 RPM for a countersink of this size. If you don't want to spend the money on this, a pretty good hole can be obtained with the Ryobi set AFTER you hone both sides of all the cutting edges. An Ez-lap or similar DMT tool or small sharpening card is good for that. (and they are diamond grit, so they will also sharpen this countersink if you drill enough holes to dull it) This countersink product series includes several drill diameters. This one will clearance drill for the threads on a #8 modern wood or deck screw. Consider the screws you are going to use and whether they have a relieved shank that will extend through the top workpiece. I will probably buy a 1/8" one for that case. Also, I learned that wood screws, at least the GRK brand, are 90 degree heads. Sheet metal screws and machine screws to imperial (U.S.) standards are 82 degrees. Machine screws for very thin parts (aircraft or electronics sheet metal) are sometimes 100 degrees. Amana offers 82 and 90 degree versions. If you are using a drill press, very good results in wood can be obtained with a machinist's zero-flute Weldon countersink set. They are HSS and must be sharpened occasionally with a small stone in a moto-tool or die grinder. Those will not counterbore for a plug, only countersink. Machinery suppliers also sell one-flute countersinks that will do pretty good, and solid carbide countersinks. Hand drilling with the common six-flute hardware-store countersinks either leads to burning through the wood since they are not sharp, or more commonly wobbling in the hole and chattering. If you've read this far, you are now a countersink expert... Edit: If your collar is turning after contact, try light machine oil under the retaining ring. Made a difference for me.

We have used these for a while and tried what i feel might be all others currently available. These are very very durable. Extremely adjustable and offer precise duplication. Get extra drill bits with them, we try to follow a 4:1 ratio for drill bits to countersink. The bits are a more steep spiral than typical at most stores making faster cuts. We average approx 500 holes with the drill bits and 2000 cuts with the countersink before dulling or damage. You can continue to use them after 2000 cuts but will begin to notice tear out on the edges. Our typical work is on IPE which is very unforgiving to tooling. Awesome countersink. The one with the nylon bushing is good for tight spaces but not as durable as the gold bodied ones.

This is a great tool for fast consistent counter-sinking screws and it leaves no marks when it bottoms out. Expensive but worth it if you need to do a lot of counter-sinks. A note - the diameter of the counterbore is the same on all the different models (3/8"), it's the size of the pilot hole bit that changes depending on what size screw you want it for. So if it's a #6 or #10 screw, the counterbore bit will be 3/8" and you adjust the height of the stop to control the diameter of the counterbore hole in the wood.

J’ai navigué pas mal entre les produits de ce type. J’ai enfin trouvé le bon ! C’est un peu cher mais ça vaut le coup Réglable facilement

This is an absolutely awesome piece of kit. Fast, accurate, repeatable countersunk holes with no marking of the wood. I like this, a lot.

Es un producto que cumple perfectamente con sus funciones señaladas. Ojalá que todas las compras resultaran como ésta.

Un poco desilusionado, esperaba más de esta marca. Deja marcas en la madera y puede arruinar el trabajo por completo