Rhino Impact Diamond Drill Bit 8mm/ 5/16" Twin Pack

Finally got my glass shower door in and ready to try these out. I ordered 2 sets. Just in case. In the past I have used Irwin glass and tile bits. Those bits seem to take forever to drill using water of course to keep bit cool. When I saw these bits I was curious and optimistic. My shower door has two hinges with a total of 8 screws. Using the old style bits it tooke about 5-8 min per hole. I bit did about 2-3 holes before it was dull. So I put the drill in the my cordless drill and set the bit up to drill my porcelain tile and realized this was not gonna work because the bit has no drill bit like a normal hole saw. I tried a couple of times and the bit just moved all over the place. Long story short I whent and bought a couple of old style Irwin tile bits, sizes 1/4, 5/16, and 3/8. I used these three bits and stepped up to 3/8 making the hole big enough for the new bit to fit it the hole and then drilled the rest of the way. These bits went through the tile in about 30 seconds. Saving me alot of time and heartache. Got all 8 holes in about 15 min compared to 1hr 20 mins. I used a big paper clip to clean the bit out after each hole. Hope this helps

I used this product to drill numerous holes in porcelain tiles and it still has lots of life left in it. However, I also applied water frequently with a small squeeze bulb from an ear wax removal kit, while using the bit and I kept the speed at a slow but sure pace to minimize heat build up. I also used clamps where possible to hold thick transparent plastic with appropriately sized holes that I pre-drilled to keep the bit properly and accurately positioned in my hand drill. I saved a lot of money, without sacrificing results.

I ordered this product after totally burning up a set of carbide tipped tile bits before realizing my tile was porcelain & the bits were designed for glass & ceramic. These bits worked fabulously - I was installing shower doors & only had to drill 6 holes, so I can't speak about extended use, but I can say that I only used one bit & it was still going strong on hole 6. Took about 5 minutes per hole to cut through floor tile. The center hole did clog up & I had to frequently clean it out, but nothing too bad - I'd definitely order them again!

Which was a heck of a lot better than the Neiko "heavy duty diamond dust hole saw" I bought at the same time. I also tried the best bit they had at Home Depot before I purchased these. This was a superior product.

I purchase bits that 3 times as much as these and they did not perform as good as these do. I drill a lot of glass and these hold up longer then any expensive ones I bought. I will be buying more of these when I need more.

Dont hold up

Great price and worked better then others I have bought from Lowes.

worked well on hard tile in bathroom where no other drill bits did

Arrived the next day from ordering, brilliant, wanted to use to drill terracotta pots & worked really well, took it slow with lots of water. It didn't blunt as some reviews have suggested, would highly recommend this & you get 2 , bonus

Excellent product for price done job I needed at fraction of the cost

Utilisé pour percer 4 trou dans faience de 1cm d'épaisseur. Fait le job avec un seul foret !