Size:Hole Diameter 15mm 15mm Diamond Coated Hole Saw Drill Bits for Stone Granite Marble Ceramic Pack of 5Pcs Product Specification Product Name: Diamond tip masonry bit, Stone cutting bits, Granite hole bit Outside Diameter : 15 mm Internal Diameter: 12mm Shank Diameter: 6.5mm Drilling Depth: 29mm Total Length: 55mm Brand Name: Joiner Use: Masonry Drilling Material: Diamond, steel Please choose from the drop down menu which size best qualifies your need Features Brand new & High quality Easy to use, Good performance and long life Excellent for making clean and accurate hole on stone, granite, marble, tile Works better with a electric drill( Excluding in this item ) Diamond drill set with standard 6.5 mm shank that will fit cordless screwdrivers, drills etc or use in standard drill chuck Drilling speed: Drill a holes in seconds Use with water as a lubricant Quick Tips 1. Please add water for coolant and drill slowly 2. Start drill at 45 Degree to surface and align to 90 Degree as hole forms 3. Never use drills while machine is in hammer action 4. Holes require no futher work as cutting is clean Regular Air postage from China to United States is FREE and takes 10-25 days delivery to your home We will send out your order within 1-2 days after payment has been received and cleared We Can List Any Size( Hole Diameter from 6mm - 160mm) & Amount Of This Product How to use a hand drill to drill holes in the rocks/tile/glass? Step 1. The bit on the rocks/tile/glass 45 degree, open a half-moon notch on it Step 2. Slowly up the bit to 60 degrees, and then gently drill Step 3. Reached 90 degrees, continue to drill Step 4. Drill through the rocks/tile/glass finally Welcome to Visit Our Store: www..com/shops/DiamondTools30
R**E
They Really Work!
I'm drilling through 1 1/4" hard granite. I tried a similar Milwaukee bit from the orange big box store, which cost $16 and these bits did every bit as good, or better, that the more expensive bit. I didn't expect this since I was getting 10 for the price of 1, but it's really true. A single bit has easily gone through two holes and I'm pretty sure I can get a third on the same bit. As others have said, take it VERY slowly and be patient. I'm using a 3/8" corded drill with probably about 200-300 RPM and generally light pressure. Takes about 10 minutes to get through one hole.
L**R
Great performance for the price! Recommended!
Definitely recommend these bits. Worked flawlessly on hard porcelain (PEI 5) only used 1 bit to drill 4 holes on wall tile. Drilled slowly while constantly spraying water on the bit with a spray bottle. I expected much worse performance for the price of these 10 bits but I didn't even have to use more than 1 bit.
M**S
Good value
Did a good job cutting through mullite ceramic plates. 16 holes with one bit. Made sure there was good water flow to cool bit and clear cut material out of the hole. Bit still seems to be in perfect condition
J**.
Cheaply made
These are nearly worthless. Had I wasted my time I would've burned thru all 5 just to get one 1.5" hole drilled thru tile into concrete. Cheap.
B**N
Worth it!
Worked well in a drill press and cut glass quickly.
A**R
Excelente
Muy bueno
S**Y
Worked well on 1/4” porcelain tiles
We got 1 1/2 holes per bit, through 5/16” thick hard porcelain tile. each hole took 5-10 minutes, drilling up. Instructions to start bit at 45 w drill spinning, brace your hands well, worked very well.
D**W
Great bit
They cut great as long as you go slow.
M**R
They work, sort of
I bought these and another brand of hole saw bit, and I can only say I was impressed with the other ones. The ones-that-aren't-these-ones cut three holes in 1cm thick glass and still had a bit of life in them. I burned through two of these bits cutting one similar hole, even with diligently keeping the water up to them as I was cutting. These will do the job and won't break the bank, but they aren't as good as some other budget bits on the market.
K**N
Good product
so far they have done a good job of drilling holes in the bottom of liquor bottles for a project I'm working on.
Trustpilot
1 week ago
1 month ago
