Dremel 664DR 1/8" Diamond Drill FlipBit for Hard Materials, Diamond Grit 3/32-in Cutting Bit Rotary Accessory

Works great with my Dremel. Very happy with this purchase.

I bought this product to make some ornaments and do some glass work. It works great, but like the directions say u need to stabilize what you are working with, I have the dremil work station 220-01 amd secure what I'm working with and use it. But if you try to free hand u will crack and break.

Easy to use! Saved me having to use two separate bits. Useful when redrilling bead holes to larger size by graduating the size of the bead hole. Makes for clean entry and exit points. No “blow-out”.

[This review was collected as part of a promotion.] I purchased 3 months ago to use on my flower pots and other hard to cut items. Cuts through everything I've used it on like butter. Highly recommend.

the smaller end of the bit (which i use more) wore out rather quickly... would the cutting oil help this last longer than it did?

I bought this two-sided bit via online retailer and it arrived on Friday (Today is Sunday, two days later). I was excited as I needed it for an on-going project. I used the larger side for one hole on Friday to test it out and confirm it will drill through the piece of stained glass I intend to use in my project. Everything went smoothly. On Saturday, 6 more holes were drilled before the bit and my Dremel tool were both too hot to continue using. On Sunday (today) I tried again to find that the larger side was now unable to drill anymore holes. The smaller of the two sides lasted only 3 holes before it was done. I had read reviews on other bits intended for glass with the same results but decided to take a chance on this double-sided bit as it was labeled "New" and surely Dremel learns from their mistakes?! I also took the chance as I need to drill smaller holes and a standard drill/drill bit is not sufficient for this project so my Dremel tool was ideal. I have 56 more holes to drill, at an average of 7 holes per bit, I either have to fork over a large sum of money for more bits or find some other alternative (I'm leaning on the ladder at this point in time). I will definitely think twice before depending on my Dremel tool in the future.

I was looking forward to trying out this drill bit and I was very disappointed with the results. I used the smaller side first and it completely snapped in half! So, I used the larger side and with in seconds it was dull and no longer continued to drill.I would not recommend this product

I bought this bit yesterday. I put the bit in the Dremel tool and the tip broke as I set the drill down on the counter! Literally, I never got to drill with it. Now I'm nervous to use the other side, in case it snaps when I apply the drill to my glass.

It makes me sad the quality that Dremel has fallen to in the past year or so. Once known for the great quality and high standards, the diamond wheels don’t last, the diamond drill bit so don’t laugh, nothing goes more than a few hours before needing replaced. I’ve been doing this a long time I know what I’m doing. It’s not me, it’s not you, it’s the quality of Dremel saw blades abd drill bits anymore - And it’s been $25 for one saw blade and $10 for one drill bit and them last an hour at the most it’s ridiculous. I’m gonna start looking for offbrand saw blades and drill bits

I bought this bit yesterday with high hopes. I was quickly disappointed. Turns out to have been a waste of money and time! I have been happy with my dremel accessories in the past but I definitely want to warn others against purchasing this particular bit. I have had 5 failed attempts at cutting a hole in an 1/8" piece of stained glass. I've followed all recommended cutting instructions and had zero success. I spent 20 minutes working on one hole! And it ended up breaking! That's ridiculous. Don't buy this bit until dremel comes out with something better.