Tykovon 5 Pcs 6mm Diamond Drill Bits, Porcelain Tile Drill Bit, Hex Shank Diamond Dry Drill Bits Sets for Granite, Ceramic, Marble, Tile Stone, Glass, Hard Materials

I don’t usually leave feedback. Ordered these for bathroom DIY job, to drill through 10mm Italian porcelain tile. They are fantastic. I drilled two holes per bit, could do more I am sure but they came as a pack of 5 and only 9 holes needed. I used a cheap suction drill bit guide to start and frequently added a little water to hole/bit. Used the little plastic tube they come in. Cut through the tile readily. I read complaints of slow and difficult but that’s what one would expect, it is not cutting like a sharp drill through would but abrading the very hard porcelain - imagine filing a hard rock. 10mins a hole max with repeated wetting reckon there’s plenty of life left in them.

Great for drilling through tiles.

So I needed to drill holes into my outdoor porcelain tiles to hold up waterproof sockets. I looked at toolstation and for one diamond drill bit it was £15. Even with that people were reviewing the bit and saying they only got 2-3 holes from the bit before it needed to be retired. Yikes.So when I saw this on amazon, I thought - hey for £15, I get x5 bits. So if I only get 2/3 holes from one bit, then I get 5x the amount for the same price. So I decided to just go with these.The other reviews were not lying. If you do not cool down the bits with water and look after them - you only get 2 or 3 holes before they are cooked but that is FAR better than paying £15 for only one bit. So to me this was an absolute win.So how well do they work?They aren't lying when they say the head with skip around the tile. My advice? Get a sample tile and practice for a feel first. That's what I did. I discovered that you need to hold it at 45deg (like they recommend) but at FULL drill speed, and holding the drill tight against the direction of where it wants to go. Once you have a little bit of a dig, re-align it into the hole and press hard and full speed while wiggling it slightly. Each hold took roughly 2/3 minutes to get through a 20mm tile which isn't too bad!So overall, don't expect these bits to last - 2/3 holes tops for each but compared to going to toolstation and buying just one? These are a far better deal. I've posted some pictures so you can see what I'm talking about.

I bought a porcelain drill bit from Topps Tiles which cost around £45 and after 1 hole it was buggered.Having read the reviews on here about these Tykovon drill bits, I thought I'd give them a go.They are absolutely brilliant, I start the hole with the original drill bit from Tops tiles, just to get it started , then move over to the Tykovon drill bit, go in at a 45% angle until you get a slight dig out, then straighten the angle until you get your hole. Would definitely use again.

Went straight through some very hard wall tiles on which is already blunted a diamond tipped ceramic bit and four masonry bits. Easily cut eight holes with one of these bits.

Bought to cut four 6mm holes in new porcelain 9mm tiles. Require careful starting at 45 degree angle to avoid run off and marking but once started the hole is neat and true to size.Four holes and two worn out bits later I was pleased with the result. Used a standard 18v battery powered drill on slow speed without lubricant. May last longer with lubricant but did not want to risk staining the grouting. Risk of tile breaking must be close to zero if away from edge. I hade to drill 5mm from tile edge without breakage but was very careful. More like grinding than drilling.

These work well but be warned - each drillbit will only last max 3x uses with 15mm thick porcelain tiles before going blunt ( you can tell theyre blunt when they stop grinding. Make sure you have enough.

These are fantastic value for money compared to some named brands. I've drilled 12 holes in porcelain tiles and still have 3 bits unused. I use a tile drill locator but you can start slower on an angle and get an accurate hole. The key to these type of bits is to use high speed, slower is not better. I am a professional maintenance man/multi trader and genuinely rate these.