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Your cart is empty.Product Description
Application and Notice
Which Material or Condition?
- Drilling hard granite, marble, engineering stone, concrete, brick,masonry and all similar materials
- Ideal for drilling the faucet mounting holes in stone countertops, plumbing lines in showers and vanities
- Dry or Wet Drilling - use wet will greatly prolong the segment life
Which Machine?
- With 5/8-Inch-11 Thread; Easily operate on Angle Grinder
- If you fit them on drill or other machine, you need an adapter, such as SDS, hex, Round plus shank...
Notice:
- Do not use this bit in hammer or Impact mode
- Do not give too much pressure or sway the core bits when working
- If find hard to drill, take a break and check the segments.
- If the segment become blunt, please try to sharp it by drilling a hole on the abrasive concrete and then continue to drill the hard material.
Operation Tips for Laser Welded Diamond Dry core bits
- 1.Fix it on angle grinder tightly and rightly
- 2.Turn on the angle grinder and let the bit rotating in the air to check if there is balance problem
- 3.Hold the machine very steadily and give gentle pressure
- 4. Start drilling as per following instructions:
- 1) place the drill at a 30 degree angle, it will help to position
- 2) Drilling the material till the hole start to form
- 3) Bring the drill up into upright position slowly then keep drilling vertically.
Laser welded technology
Laser welded technology avoid segments off when dry working(Every Diamond Segment is made by us Independently)
Vacuum brazed side protection
Vacuum brazed side protection offers clean cut & steel core protection (inside and outside both, 20MM & above )
Turbo segments
Turbo segments could provide aggressive drilling speed (32mm & above) and smooth Cutting in Dry/Wet Condition
Strong Body and High-Quality Diamond
High-Quality Diamond and Stong Steel Body extend drilling life and improve the working efficiency
How to Use Laser Welded Core Drill Bits(Graphic)
Step 1
- Fix it on angle grinder tightly and rightly.
- Turn on the angle grinder and let the core bits rotating in the air to check if there is balance problem
Step 2
- Hold the machine very steadily and give gentle pressure
- Start drilling as per following instructions
- 1) place the drill at a 30 degree angle, it will help to position
- 2) Drilling the material till the hole start to form
Step 3
- 3) Bring the drill up into upright position slowly then keep drilling vertically.
- Do not give too much pressure or sway the core bits when working
Junior R.
Reviewed in the United States on March 1, 2025
Just what I've been looking for
GSD
Reviewed in the United States on January 1, 2025
Works as advertised
Customer
Reviewed in the United States on June 6, 2024
I was very pessimistic about this tool. It's hard to find a hole saw that actually cuts. I was very happy with this product. I rarely review items (this is my first on amazon) but I felt this tool deserved the 5 star.
gbpd015
Reviewed in the United States on July 7, 2022
I only had one hole to drill to get a sump discharge pipe out of my foundation. I have precast walls which are about 1.5 inches thick, but it's 5000psi concrete, so it's very hard. I rubbed this bit down with some lubricating oil right before drilling. This worked great, went through in less than 5 minutes without having to pull it out to cool or re-oil. I can't really rate longevity with only one hole drilled, but glad I bought it.
Vince
Reviewed in the United States on December 17, 2022
I received a bottle of bone support vitamins. No core drill bit. No drill bit adapter. Just a bottle of vitamins.
Michelle Sheahan
Reviewed in the United States on May 24, 2021
I used this tool with a 12" extender and a 5/8-11 HEX shank to cut through 16"s of brick and it worked like a charm. Cut like butter. It has abrasive material on the side to make the hole just a hair width bigger than the whole saw. Made inserting and removing the saw a breeze. Did not dull and was a strong cutter throughout the process. Still in good shape. Was able to push a 1-1/2 PVC pipe in the hole left by this saw so that I can run some wires through the wall. Worked like a champ and is not a one-use tool, it retained its self well
Customer
Reviewed in the United States on May 19, 2020
Wasn't sure how well this was going to work but was pleasantly surprised with results. I bought two of these SHDiamtool core drills, a 50mm and a 32mm for custom work on sandstone blocks 2 to 2-1/4" thick. I had 12 blocks that needed one 2" hole drilled completely thru and four 1-1/4" holes drilled an inch deep, not all the way thru.These drills do not come with a pilot drill, so I made a template out of plywood and 2x4s with the same hole sizes and layout as I needed for the blocks. That made it easy to be sure the drill didn't skip or wander when making initial contact with surface of stone. I used a drill press with water coolant and checked a core drill speed chart to make sure I was in the ball park for spindle speed - used 1080 rpm for both sizes - and these things cut thru sandstone really well and quite quickly using only moderate downfeed pressure.This pair of core drills performed well and did exactly what I needed - I would buy them again, but they hardly show any wear on them after 12 holes with the 50mm and 48 half depth holes on the 32mm. Make sure you have or buy the correct arbor for them and you should have no problems if you keep them cool with water, use the correct spindle speed and don't use too much down force.
L. Limon
Reviewed in the United States on December 25, 2018
Used this product except through stone worked very well.
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