Great blade. Cuts the steel like butter.
Description
Professional-grade diamond blades designed for a wide range of cutting applications, including sheet metal, metal plating, rebar, steel bar, angle iron, ductile iron, stainless steel, and even PVC pipe. Commonly trusted by fire departments for cutting steel doors, window bars, and other rescue applications.
Diamond Extreme blades deliver over 100X the lifespan of traditional abrasive wheels while maintaining a consistent cutting depth, producing fewer sparks, and offering a higher level of safety. Featuring GE Superabrasive diamonds vacuum brazed to a heat-treated steel core—the strongest bond available—these blades are built for maximum durability and are virtually shatterproof.
Features & Benefits
- Lasts over 100X longer than abrasive wheels
- Vacuum-brazed GE Superabrasive diamonds for superior strength and durability
- Heat-treated high-speed steel core dissipates heat and helps minimize warping or breakage
- Maintains a constant depth of cut throughout the blade’s life
- Produces fewer sparks than traditional abrasive wheels
- Compatible with most cut-off saws, chop saws, circular saws, and hand grinders
- Diamond grit size: 30/40
Ideal for professional contractors, metal fabricators, rescue crews, and demanding industrial applications.
Limited Lifetime Warranty
All diamond tool products, including diamond blades, core bits, hole saws, and grinding wheels, are covered by a limited lifetime warranty against manufacturing defects.
If a diamond tool is found to have a manufacturing defect within the first 50% of its usable life, the tool may be eligible for replacement.
Eligible products may be replaced free of charge a maximum of one (1) time per order.
This warranty does not cover normal wear and tear, misuse, improper application, overheating, abuse, accidental damage, damage resulting from improper installation or operation, or any tool that has exceeded 50% of its usable life.
Diamond Blade Recommended RPMs
Diamond Blade Cutting Depth Chart
Customer Reviews
Overall rating: 4.5 / 5 from 36 reviews.
wish i could explain the photos better, they deserve captions. i bought 2 replacements for the blade on the dewalt, as i believed it was at the end of its life. the chisel was freshly sharpened for marking the 1/2 inch steel for the cut, i took a picture as circled because that is what happened when i hit the chisel, it barely dented the now i know is hardened steel. made 2 cuts with the used blade then after cut an oxygen tank open for recycling, took the top and bottom off using the same blade i thought was done... the blade is about a year old and has already seen quite a bit of use. if you work with metal, and dont have one of these, get one, give it a shot, you will be impressed. this is my second review. i personally believe if you dont have the power to run a plasma cutter or dont have a cutting torch, it does exactly the same thing. i havent found something it is unable to cut.
Needed to slot a heavy wall 1.25 DOM tube with .281 wall thickness quickly & consistently & at a 1/4" opening. Tried a milling process but took way to much time. Tried a tube laser but annealing occurred with lots of heat added to the part & a jagged slot face. So we found this diamond blade and gave it a try. On a Rigid table saw no less. Cut cleanly, cut quickly and didn't burn the part. Some sparks but cutting over a concrete pad & sparks didn't get to the floor. If we get the customer PO we will stack a pair on the arbor so only 1 full cut & 1 clean up cut per part vs 4 & wobbly side walls. Thanks DeltaDiamond, u helped us SHINE for the customer.
so long review, i have been using the 7" 5/8 arbor diamond extreme for years now, made a review on amazon, short version buy this. i was using dewalt composite cutting wheels until i found this, super difference, more straight cuts, less binding and throwing the tool into your wrist, thinner cut. i am super satisfied most things just work, this works phenomenally well. if you cut metal, and dont have one, get one. you will be pleased. functionality, the trailer is 1/4" angle iron by 2", i cut the welds as i will repurpose the angle iron. yes it cut through 1/4 inch welds. even more impressive, my weld cart i built has a stainless steel top, which i cut from a piece of 1/2 inch thick stainless plate which was scrap from work. after that use, it still cut for about 3 months. they cut aluminum but hog up doing it, they cut stainless, they cut any kind of steel. super pleased and if i can update the review at a later date i will remember to put more photos.
Awesome
great blades
Blade came quick and worked great! I put it to work cutting through24" wide 4" thick rubber tracks with internal steel cables from a quad tractor. Happy customer!! Thanks!
These were used to cut through 1.5" thick square tube that was 6"x6" like butter, highly recommend.
Works great!
Cut through stainless steel that was bonded to abs plastic. Had no problem at all.
Don’t cut as well as I would like it to
Excellent product.
Exactly as described and received very quickly.
Exceeded my expectation. Stainless bar stock is a challenge to cut but my diamond blade did the work
Great Blade at an Awesome Price.
Works great we are using it in a circular saw to cut IMP (insulated metal panels)that are 4” thick one pass with the saw and diamond blade cuts through without having to flip the panel and do a second pass.
Cuts great!
So far so good! using a miter saw on 16 gauge steel tubing
I am a carpenter by trade. Used several metal blades to cut .125 2.5 inch metal tubing for a deck. Once I ordered my diamond blade I had no need to order any other blades. I have made 60 to 70 cuts and the first cut is the same as the 70th. I would and have recommended these blades to all my tradesman and friends.
This product works well and we will likely use it for certain projects. The project that we purchased it for was not the best fit, but we see it being useful in future situations.
best blade for cutting metals i ever used
Selecting the proper blade was simple and straightforward. The order process was easy, tracking was clear and the blade was delivered quickly. Overall a very positive process.
We tried this blade out and it worked much better than the blade we were using. It is likely that we will be ordering more.
Blade came on time and works great!
Ordered a 16" diamond cutting blade. Order showed as delivered and the blade was never received. Tried to contact customer service and have not seen an email back aside from the email asking me to review it. How can I review a product I never got. Id like my money back. I spent nearly $200 for the blade and never got it.
4 1/2" cut off wheels worked perfectly! Cut (2) 20" ductile iron pipes with ease and still has plenty of life left in them! Couldn't be happier!
Fantastic customer support. Thanks for helping me select the correct blade and getting it to me sooner than expected. I will certainly be buying all of my future blades here.
Made lots of burrs and did not cut right. Tried to cut a steel downspout.
Haven’t tried it yet but it fit on my miter saw. Shipping was on time.
Building a metal building and wanted a blade for my metal worm drive Skilsaw that wouldn't throw alot of sparks. Haven't used yet, but they look to be built great.
Bought these to add to my Blade collection for my grinders. They are made really well
great blade
Didn't cut as fast or as clean . But it did the job.
Stop buying the traditional cut off wheels. This blade has been on my 4 1/2" cutting grinder for 2 years. It will save you time changing wheels and money in the long run. I just ordered my second blade for my new cordless grinder. Great product.
Store owner replied: That's what we're saying (they are much safer to use too)! 2 years is excellent life for the Diamond Extreme blade. Thanks for the great review!
Blade cuts fast and very accurate. Almost NO sparks. Highly recommend this blade to anyone using abrasive cut-off wheels.
The only thing that could make this blade better would be if it came in 6 1/2" for my cordless saw.
Diamond Extreme Metal Cutting Diamond Blade, Heavy-Duty Vacuum Brazed
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