Windshield Repair Drill Bit Set - Windshield Crack Repair - Tungsten Carbide Car Window Shield Repair Rock Chip Drill Bits - Pack of 10

I have used the Permatex and 3M windshield repair kits for years. Sometimes they work really well, and sometimes they do not because the sealant can't penetrate the outer layer of the windshield (yes, there are two layers and a vacuum in between. So... I bought a set of these for my Dremel Tool kit and you have to use the smallest of the collets to make it fit and keep it tight. Start with a 45 degree angle at low speed until you have an indentation in the glass then slowly move it to perpendicular to the glass. I took my time at low speed and then slowly drilled down through the first glass. Not sure if it's supposed to give you a "pop" when you get through their first layer but that's what I felt... if anything, very subtle. Then did the Permatex sealant (vacuum first, then let the sealant get sucked in, then press the sealant in). Took my time... about 25 minutes and the result was fantastic. I'm using these bits for all my windshield repairs (our town has a lot of loose gravel, asphalt, etc and I've gotten so many rock chips in our cars). Highly recommend this kit. The bits are very, very small so recommend a second envelope or container so you don't lose these. One reviewer here said he thought it was an empty Amazon sleeve but it was at the bottom of the envelope and almost threw it away. Another reviewed said that these don't last that long... I did four windshields and still going strong with the first bit. Highly recommend this set of bits. I ordered a pack of ten... hopefully that will last me.

Nice tool works great when used efficiently.

For windshield repair the drill is very good. It is compact, light weight and easy to use. I like it much better than my Dremel. It doesn't hold a charge for more than 30 repairs or so but is easy and pretty fast to charge in vehicle with supplied cord. It is affordable enough to buy two and charge one while using the other if one is that busy.

These little guys are solid. Cut right through the glass and did its job. Tip, the lid slides off. Not hinged. Also, some drills (older Ryobi) doesn’t hold the bit.

I've been repairing windshield chips for over 30 years now...these drill bits are required to drill into the glass down to the laminate in the windshield to allow the windshield resin repair material a place to go. These are the exact bits I have been buying for over 30 years,however as the years went my suppliers moved or closed.. I was very happy,but skeptical to try these. When arrived I found them to be perfect for the glass repair situation.They are the correct size and shape, and very strong! I use each bit aprox.10 times before replacing... I had previously used these in a cordless dremel tool with special collar to fit them..But that tool gave out one day,and before I could search for a replacement, my buddy said to just use my makita 12 volt drill instead... I did and thee drill bits fit! it is the 12 volt lithium smaller battery type drill. So when I use these drill bits, I use the drill on high speed and put very little if any pressure on the drill to glass.too much pressure will break the windshield.the hole size is perfect to allow resin to fill the chip and very small and is concealed after repair. great drill bits,great quality!

Okay where do I start. I bought these to give them a try. I've been doing windshield repair for 8 years. I've been using one brand that entire time and one particular style of bit. I buy them from crack eraser. I thought I would try a different brand or a different style of drill bit. The bit works good when you drill into bad damaged area of a rock chip. But if you have a rock chip with a very tiny impact point where the bit Will not necessarily stay in one place. Let me explain. If you have a very crushed impact from a rock chip it works great It does. But that's not always the case. if you have a rock chip that has a tiny little impact point where there's just barely any surface damage. The drill bit will slide so, The bit will jump around and slide around on the windshield causing scratches. You can't get it to drill in one spot. The other problem is if you have a leg that needs to be stopped but say it's spread out maybe an inch I'll pass the rock chip. You can't drill without it sliding around on the windshield. Which causes surface scratches all over the place. So I'm comparing them from the ones I've been using for the past 8 years. They fit in my Dremel No problem I don't have to change anything out. They're the same diameter of the ones I was using prior which I am going to be going back to. I do also crack repair so if you have a 6-in crack and you need to put a little bullseye at the end of the crack to stop it again it slides around on the windshield causing surface scratches and all kinds of marks in the glass that doesn't need to be done. When using the other ones I can turn my Dremel on set where I want without the bit jumping and sliding around on the windshield causing excessive damage. I don't know where all the good reviews are from maybe friends I don't know but I think they're junk. I've given them a honest time frame of using them. I will never buy this brand again this is truly junk. I'll try to get some super close-up pictures to show the difference between the brand I was buying before and this brand. This is my experience with these bits. So the pictures show the two side-by-side. The ones from clearfield have the carbide teeth that are wrapped around the end of the bits. In my opinion that's what causes the jumping around and scratching the windshield. Versus the other brand I buy from crack eraser. And this is not an advertising for him. It's just what I've been using. The ones from crack eraser I can turn on my Dremel set it exactly where I want to on the windshield without it moving or jumping around or sliding and scratching the windshield. These are definitely going to be returned. It's my opinion I'm going back even though these are $3 cheaper it's not worth it I want quality repairs without causing excessive damage to someone's windshield.

Works good

Once I got the right jaws for the chuck of my dremel these fit perfectly. I was blown away at how well a single bit worked. It didn't walk, was very easy to control, just go slower than you think, they are that effective.