• 1,000-cuts per blade

• Polycrystalline Diamond Teeth (4)

• Made for cross cutting fiber cement board

• 7-1/4-Inch blade

• Comes with a 30-day limited warranty

Kerf: .087". Plate: .063". Carbide Grade: Diamond. Crosscutting and ripping of fiber cement board, siding and trim.

I would reccommend this blade for any cutting of cement siding.

19 of 20 found the following review helpful:


Excellent Blade  May 09, 2003 By BW
The Hitachi PCD blade surpassed all my expectations. It made crisp, clean cuts that were indistinguishable from the factory edges. The cost of the blade was insignificant compared to the time and money it saved me from changing carbide-tipped blades.

8 of 8 found the following review helpful:


Does the Job  Jul 03, 2006 By Russ
I started my siding job with a Piranha carbide blade in my circular saw because the Hardiblade I ordered had not shown up.

After one afternoon of work I could see the blade was wearing out and was sparking on the cement board, indicating the carbide teeth were burning up.

When I got the Hardiblade I put it on and continued work. Noticed right away that it slings less dust and it lasts for a loooong time. I made quite a few long rips with it and it cut very easily.

Do I think these blades are worth the very high price? Nope, they can't cost that much to manufacture.

Do I regret buying it instead of trying to use carbide blades for the whole job? Nope.

It's a good blade.

4 of 4 found the following review helpful:


Review by B. Beebe Happy Homeowner Rehab  Nov 23, 2006 By Brian Beebe
This blade makes cutting hardibacker a snooze. I've had a friend cut hardibacker with a regular blade, and the dust storm that it creates is out of control. This blade minimizes dust, and cuts the hardibacker with ease and speed.

If you're working with hardibacker, this is the blade for you. The only blade for you.

3 of 3 found the following review helpful:


No disappointments here!  Feb 20, 2009 By Tim in Mint Hill
This blade, made specifically for cutting fiber cement boards/planks, has lived up to my expectations so far. I'm a homeowner, doing my own re-siding of my home with Hardiboard planks, and I'm only about 2/3 the way done. I've had to make a lot of cuts because of multiple sides, windows etc, and have gone thru several 'certified' Hardie approved (4 tooth) blades, i.e Freud, Irwin, but they DID NOT have PCD (polycrystalline diamond) inserts. Those blades, while holding up better than a standard carbide blade would, started showing signs of wear after about 30-40 cuts, shooting sparks and such.
I read about these blades by Hitachi (DeWalt, Makita and others also have them with PCD) and the review/price seemed to make the Hitachi the best value. Good value, doesn't mean cheap!

I bought the 7-1/4" and 10" variants of the this Hitachi blade, and have made hundreds of cuts so far, with no signs of degraded cutting ability.
I use the 7-1/4 only for my circular saw for ripping. As promised, and printed on the label of this 10" blade, you can gang together up to 5 planks to cut at one time...and it works flawlessly. I use a Bosch compound miter saw and it literally makes the cut so cleanly, even after hundreds of cuts, that I simply wipe the edge with my hand before nailing the planks up. No more using a knife to cut away the jagged edges left by poor quality blades.
If you're like me, you hate dealing with the dust of cutting fiber cement boards. If using a compound or chop saw, you will cut thru so fast, with so little dust, for some cuts and having a light breeze to take the dust from you, you'll be tempted to now put the mask on every time. Not recommended, but a testament to how much less dust these do generate.

I'm very happy with this product and will gladly pay the extra dollars for PCD blades like this Hitachi again if needed. Only way to go!

See all 21 customer reviews on Amazon.com