BOSCHCC2430 Clic-Change 1/4 in. Self-Centering Drill Bit Assortment (3-Piece)

Drills perfect holes with ease

I JUST discovered these little gadgets!They are such a wonderful idea!When you have a number of holes to drill in the center of a metal hole (like hinges, caster wheel base etc...), these will drill you a hole (or at least. a pilot hole) 100% in the center every time with mindless ease!I remember futsing around trying to mark the center of the hole with a pencil and NEVER getting it right and getting frustrated! With this, you just put the right size in the drill and buzz! you're done!!! PErfect every time!

As advertised, well packaged and prompt delivery

It's a decent kit for beginners.

I bought these for a project needing many perfect pilot drill holes. I researched for a tool that would self-center the drill bit and I looked at many different brands and many different reviews. I used the #6 and the #8 size of this set on my project. I'm very impressed at how helpful and useful these self-centering drill bits are. I am 100% satisfied and I highly recommend this set. They look and feel and perform as high quality. My biggest concern was if there was drill bit depth adjustment on these tools. I can confirm that the drill bit depth is adjustable. Just loosen the set screw and it is easily to adjust the bit. Buy with confidence that you too will be impressed and 100% satisfied. Tried and tested and confirmed to be excellent in all respects.

I learned of the existence of this type of centering drill bit for hinges from a site that was using the VIX product. Since I'm not a professional, and rarely have need of using these, I had a problem spending the extra $$$$ of purchasing a VIX equivalent. Then I found these? I have zero idea how they will hold up when used in a professional environment. But for someone that rarely needs these? They are the perfect solution for me. Yes, I recommend these, and if I happen to misplace them (or someone misplaces them for me...if you have Kids, Grandkids, you get the idea...they think they need them more than I do...I know because I was the same way) I will most definitely purchase again.

These are well made and work great...springs are even ground (which is proper and which you rarely see these days). Surprisingly still made in the US. Very minimal edge/burr cleanup to do and the drill bits are good quality. They'll break in with use but if you want to disassemble and buff the parts with fine scotchbrite, put a small drop of silicone oil in there, they'll be smoother right away. Spring tension is right where it should be.I've used these for several dozen holes and been very pleased with them. I started to do a lot of tiny #4 screws so I picked up the Snappy version for that one...it works fine but it's much stiffer and requires the special extra long drill bit replacements where these Bosch don't - they just use standard jobber length bits so they're simple to replace anywhere you can find them. I think these are better than the Snappy, maybe not quite as nice as the o.g. Vix but close.Looking at photos of broken bits and such I wonder if maybe some guys didn't adjust the bit depth correctly before use. The very tip of the drill bit should be resting inside the end of the nose cone but set in just a tiny amount, like 1/32". That way the cutting edge of the bit is inside the hole so there isn't any binding/jamming when the nose is depressed, but it's also back from the tip just enough to let you set firmly in the hinge hole before the bit contacts the surface. Not sure how that guy's spring got twisted up...really not sure how that could happen in use.

I bought these to ensure flat screw instalation in faceplate for fan install in a cabinet that holds my Xbox series X.They worked perfectly to allow me to drill my first perfectly centered screw wholes. The mounting screws are near perfectly flat, the only variance being that the cheaper screws were not centered to begin with, so there is some slight imperfection in the install, but not nearly enough for me to feel it is flawed.I am a novice with wood working, and have attempted quite a bit to train myself and my eyecrometer, so I can center the drill bit by hand and get perfectly straight screws in such an install, that has proven exceptionally difficult, especially given my astigmatism and struggle with depth perception.These bits removed any need for development and allowed me to simply select the right size bit, then put it in the mounting bracket and drill the holes I needed. After merely making sure the mounting bracket didn't move between holes, I have a very professional looking install.Any tool that allows a novice to imitate professional ability is a major win in my book.Bonus, the plunge function of the drill bits were firm enough to keep the bit centered, yet soft enough they didn't pull the painted finish off the mounting plate I was installing.So I didn't have to worry about the screws not covering any piece that may have warn off, if the plunge function were too stiff.