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Professional Multifunctional Tungsten Steel Twist Drill Bits

36 reviews
100% of buyers enjoyed this product! 1798 orders
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100% High quality and Brand new.
Product Name: Multi-functional Triangle glass Drill
Carbide Tip: YG6XImported ART carbide tip
Diameter: 3mm, 4mm, 5mm, 6mm, 8mm, 10mm, 12mm
This bit for the Hard Brittle Ceramic Materials such as ceramics,tiles,Marble,Concrete, glass, alu, metal sheet and so on

Package Including:
1Set Glass Drill Bit



We are proud to offer international shipping services that currently operate in over 200 countries and islands world wide. Nothing means more to us than bringing our customers great value and service. We will continue to grow to meet the needs of all our customers, delivering a service beyond all expectation anywhere in the world.

How do you ship packages?

Packages from our warehouse in China will be shipped by ePacket or EMS depending on the weight and size of the product. Packages shipped from our US warehouse are shipped through USPS.

Do you ship worldwide?

Yes. We provide free shipping to over 200 countries around the world. However, there are some locations we are unable to ship to. If you happen to be located in one of those countries we will contact you.

What about customs?

We are not responsible for any custom fees once the items have shipped. By purchasing our products, you consent that one or more packages may be shipped to you and may get custom fees when they arrive to your country.

How long does shipping take?

Shipping time varies by location. These are our estimates:
Location *Estimated Shipping Time
United States 10-30 Business days
Canada, Europe 10-30 Business days
Australia, New Zealand 10-30 Business days
Central & South America 15-30 Business days
Asia 10-20 Business days
Africa 15-45 Business days
*This doesn’t include our 2-5 day processing time.

Do you provide tracking information?

Yes, you will receive an email once your order ships that contains your tracking information. If you haven’t received tracking info within 5 days, please contact us.

My tracking says “no information available at the moment”.

For some shipping companies, it takes 2-5 business days for the tracking information to update on the system. If your order was placed more than 5 business days ago and there is still no information on your tracking number, please contact us.

Will my items be sent in one package?

For logistical reasons, items in the same purchase will sometimes be sent in separate packages, even if you've specified combined shipping.

If you have any other questions, please contact us and we will do our best to help you out.


Order cancellation

All orders can be cancelled until they are shipped. If your order has been paid and you need to make a change or cancel an order, you must contact us within 12 hours. Once the packaging and shipping process has started, it can no longer be cancelled.


Your satisfaction is our #1 priority. Therefore, you can request a refund or reshipment for ordered products if:

  • If you did not receive the product within the guaranteed time( 45 days not including 2-5 day processing) you can request a refund or a reshipment.
  • If you received the wrong item you can request a refund or a reshipment.
  • If you do not want the product you’ve received you may request a refund but you must return the item at your expense and the item must be unused.

We do not issue the refund if:

  • Your order did not arrive due to factors within your control (i.e. providing the wrong shipping address)
  • Your order did not arrive due to exceptional circumstances outside the control of Amazmerch (i.e. not cleared by customs, delayed by a natural disaster).
  • Other exceptional circumstances outside the control of

*You can submit refund requests within 15 days after the guaranteed period for delivery (45 days) has expired. You can do it by sending a message on Contact Us page

If you are approved for a refund, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within 14 days.


If for any reason you would like to exchange your product, perhaps for a different size in clothing. You must contact us first and we will guide you through the steps.

Please do not send your purchase back to us unless we authorise you to do so.

Real customer reviews

36 reviews
100% of buyers enjoyed this product!
5 stars
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1 star
verifed buyer
5 Jan 2021

Never used a drill bit like this before and it was a great experience to have a try. It is in a glass drill bit shape but can also perform as a robust masonry drill bit. I first used one bit to do a test drilling on a waste tile. It drilled through very well. Then I used it to do some holes in bathroom. It ran fast and easily penetrated the ceramic tile and concrete without using any water. After several holes drilling it still worked as a new bit. Very tough bit head, worked very well as advertised..

verifed buyer
1 Jan 2021

I am happy with this purchase. Trying to drill holes in the bathroom tiles to install 3 shower doors. It is sharp at the tip so it doesn't slide like regular drill bit would. U do need to add water so the bit don't get too hot. Also, it is tile, you need to take time to drill through the hole and not put too much pressure on the tile. I can drill through a regular piece of tile in about 15 secs to give you a scale. once it is drilled through, use a regular drill for the sheetrock and wood.

verifed buyer
30 Dec 2020

I wanted to drill a hole in a fondue pot so I could use it as a planter, and this got the job done. I thought they were kind of bad quality at first because it took quite a while to drill through, but then I realized I was drilling through "stone-ware" hardened pottery. I later used them on terracotta and they drilled through like butter. Nice little hard plastic case too.

verifed buyer
24 Dec 2020

Needed a good bit to hang a fireplace mantle after several concrete bits just lost the edge quickly going in to brick. The bit from this set drilled the hole I needed very quickly and smoothly without losing any of its integrity. I am back on its listing as I am considering another set to have on hand. Very impressive bits.

verifed buyer
24 Dec 2020

Exactly what I needed for less money than the stores wanted for 1 drill bit. This cut through the tile like a hot knife to butter. Okay not THAT easy but it was amazing. I used painters tape to help “hold” the bit from slipping and went really slow. After a few rotations I got a nice little indent. I went a little deeper and then switched to a masonry bit which was smaller for my application. But this did exactly what I needed it to do. Very happy with this product. I did not have water on hand to keep the bit cool so I stopped drilling ever few seconds to blow the tip and hole and let it cool before restarting.

verifed buyer
23 Dec 2020

These are amazing for drilling holes in pots!! I wasn’t sure because the reviews are here and there, but as soon as these bad boys showed up, I started drilling holes and they work amazingly. The bits don’t walk, either. I used the middle sized bit easily on thick and thin pots with no problems. The world is my oyster now - anything can be a pot!

verifed buyer
21 Dec 2020

Worked surprisingly well-the bits aren't terribly sharp though so it does take a bit of drilling time. Go slow and use water as it does get very hot. I also recommend starting with one of the smaller bits and then using a larger bit if you want to enlarge the hole which is what I did. So far I've drilled through a thick ceramic pot, a plastic pot, and this glass jar. Definitely exceeded expectations for the money I paid.

verifed buyer
19 Dec 2020

I use these to drill holes into my plant pots that don't already have drain holes and they work perfect for the job. I start off with the smallest bit and work my way up. Sometimes it takes longer for the bit to go through some pots so just be patient and don't try to force it. Would recommend.

verifed buyer
18 Dec 2020

Needed something to drill holes in pots for the garden, this did the trick just fine! It’s so frustrating to find great pots when shopping but then see no drainage holes which makes them practically useless for my purposes.

verifed buyer
18 Dec 2020

I’ve never used this style of bit before, but it drilled through solid masonry like it was butter. Using just a cordless drill, I was able to drill four 10mm holes 3” deep in less than 2 minutes. What an improvement over the traditional masonry bits! No need to use a hammer drill - in fact, the instructions say not to - you will not need the usual force. Huge find!

verifed buyer
15 Dec 2020

After spending loads of time researching drill bits for my porcelain tile job I finally found these and couldn't be happier! I was able to use use these bits for all the items I had to install in my camode/shower stall area of my master suite bathroom. Comman sense told me to use water while drilling and that was a great idea...the two smaller bits I used lasted the entire job and I will be able to use them on my next project also (jack&Jill bathroom)...

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