Diamond Burr Drill Bits Polishing Bit Rotary Tool Accessories Glass Small Pipe Deburring 90 Pieces 2.35MM

"TERRIBLE QUALITY" Be warned now that these bits are about as terrible quality you will find anywhere online or offline, don't be fooled or seduced by the very low price as the price absolutely reflected the quality.firstly al 3 cases were cracked and broken with all the bits delivered loos..but that i could forgive if that was all what was wrong with these bits...but sadly that is far from what is wrong with these bits.my bits are ill finished with imperfections all over them , some slightly bent and others badly bent, what they call diamond cutter is not what i would call a diamond cutter with badly applied cutting media not even close to nearly applied around the cutting head but more like a sparsely applied grit glued on with paint,i have been using rotary drills for over 30 years and these bits are as bad as they come.THESE CUTTER BURRS ARE NOT FIT FOR PURPOSE AND I ABSOLUTELY DO NOT RECOMMEND THEM.I BOUGHT SEVERAL BUDGET SETS OF VARIOUS SIZES FROM MULTIPLE SUPPLIERS ON AMAZON AND THEY ALL APPEAR TO COME FROM THE SAME MANUFACTURER WITH THE SAME POOR FINISH AND NONE ARE FIR FOR PURPOSE I AM SORRY TO SAY.I DID NOT HAVE HIGH HOPES BUT SOMETIMES YOU DO GET A NICE SURPRISE WHEN TAKING A GAMBLE ON A BARGAIN BUT NOT IN THIS CASE.WHAT IS WORSE IS THE AMOUNT OF POSITIVE FEEDBACKS ON THESE BITS WHICH IS BAFFLING TO UNBELIEVABLE, SO I HAVE TO ASSUME THESE PEOPLE ARE CLUELESS, VERY EASILY PLEASED OR NEVER SEEN A QUALITY BIT OR CUTTER BEFORE OR THE MANUFACTURER WAS HAVING A VERY BAD DAY AND I JUST HAPPENED TO BUY THE BAD BATCH OF THE DAY AS THESE ARE CERTAINLY THE WORST I HAVE SEEN.THE MANUFACTURER SHOULD BE ASHAMED SUPPLYING THIS POOR QUALITY TAT.AVOIDTHANKS

So I'm very happy with SOME of the bits, they work like genuine magic.*I use these to engrave ceramic tiles*However, somehow, most of the bits are super dull and/or fragile! They just make a whole lot of noise and cause burning but don't actually engrave. (Not due to tightening issues dw, it's genuinely that there's an odd yet significant different in quality).Also, (maybe because I'm pressing a bit hard with the dull bits but eh, still), some of the bit's heads seem to snap off the shaft really easily.But honestly, for this uncommon bit size and the fab value for money, well worth it!!!Hope that helps! :)

not used them yet but look good

These are 2.3mm shanks to fit a Dremel needs to be 3mm. I Purchased for use with a new dremell 3000. The shafts on these are smaller than those of the dremell. I packet the collet out with a tiny piece of sand paper to extend the width of the shaft so the collect would bit and grip. This worked to an extent but this is dangerous as the bit does work loose. So if you have a Dremel 3000 these don't fit. They do however cut fine. I'm going to keep these and use with care on occasion. I am looking to buy the correct size now.

Excellent. Super fast delivery

Had to return the product as was not fit for use. Snapped 7 bits in approx 5 mins

Not perfect, but these burrs are an inexpensive alternative to Dremel burrs and they get the job done.

good