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  • Super hard hole saw 278

Super hard hole saw 278 278075

4.12 (16)
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209.99 SGD
Shipped after 2018-07-23
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Item Feature
Effective Length (mm)
Chuck Dimensions (mm)
TRUSCO Part Number
(Center drill) Cobalt high-speed steel and Drill with carbide tip : C-6 [278CDC6] or T-6 [278CDT6] (phi7.9x48L))
Blade Diameter D (phi mm)
Number of Blades
Center drill: C-8 [278CDC8]
Compatible Motor
(Please use it in rotation only) electric drill
Customer Reviews
5 star 10
4 star 2
3 star 2
2 star 0
1 star 2
Review Rating: 4.12
16 Customer Reviews
The reviews are automatic translation.
Production of audio equipment
From Japan
On 2018-06-13 19:49:36
For drilling a 25 mm thick aluminum case I bought it. The sharpness is also good, and the carbide blade is still good.
This review is about item#8733347.
Control panel processing time
From Japan
On 2018-06-01 17:14:51
It is very easy to drill the work. I do not know the durability yet so I made it "somewhat satisfied".
This review is about item#8733365.
From Japan
On 2018-01-23 20:47:44
A2017 I used it to make holes 8 mm thick. Since 8 mm is impossible from one side, it is processed from both sides. It was easy to open.
This review is about item#8733523.
Drilling of stainless steel plate
From Japan
On 2017-10-02 16:16:21
Chip welding is also good, center of drill is also out. This will last long.
This review is about item#8733277.
Drill a hole in the square pipe of 2.3 t.
From Japan
On 2017-03-04 10:53:18
I bought 48 holes in 2.3 tons of mild steel, but I bought oil so as not to raise the temperature, but when I opened 30 pieces, the super steel could not drill out hole. I think that the life is too short. Even made in China it will not break in dozens of holes.
This review is about item#8733277.
6 stainless steel machining
From Japan
On 2016-08-10 20:25:17
Easy processing with 10.8 charging
This review is about item#8733645.
Drilling of stainless steel plate
From Japan
On 2016-01-28 17:39:38
I purchased thought that it would last long because the price was high, but my teeth flew when I opened 4 stainless steel plates (3 mm thick). I wonder if my arm is bad! I immediately purchased other maker items and continued the work, but I opened eight there, but it was fine.
This review is about item#08733277.
Drilling in aluminum panels
From Japan
On 2015-11-27 17:01:22
Although I have not used it yet, I use the same size. Especially trouble is not found, but the price is high, is not it? At first I used a punch press, but the aluminum panels bent too far. Again, I realized again that Holso was a necessary thing.
This review is about item#08733471.
Used to drill a tapping hole in metal (aluminum plate)
From Japan
On 2015-03-23 22:06:16
I repeatedly drilled aluminum plate (3 mm thick) with electric drill driver, but I am satisfied that it opened smoothly and cleanly. I think that durability is somewhat because it does not have a chipping defect etc at the moment so far.
This review is about item#08733286.
Mirror drilling
From Japan
On 2014-12-17 17:08:34
Since I used it from before, I purchased it this time without problems.
This review is about item#08733313.