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Viper Concrete Diamond Blade – Laser-Welded Segmented Concrete Cutting Blade (4" to 20")
In stock
- SKU : A0240
Description
The Viper concrete diamond blade – Diamond King's best-selling blade. Laser-welded 10mm segments cut cured concrete, brick, block, pavers & stone wet or dry.
- Hard-bond diamond matrix – built to hold its edge in cured & reinforced concrete
- Laser-welded segments – safe for dry cutting on grinders & cut-off saws
- Keyhole cooling gullets – cooler, faster, straighter cuts
- 12 sizes, 4" to 20" – fits angle grinders, circular saws, cut-off saws & walk-behind saws
- Free shipping • Trusted by 10,000+ contractors
Laser-WeldedWet or DryDiamond King Ranking 5 / 5
Viper Concrete Diamond Blade: Diamond King's Best-Selling Blade for Cured Concrete, Brick, Block, Pavers & Stone
The Viper is the blade our contractors reach for first, and the one we sell more of than any other. Its laser-welded 10mm diamond segments sit in a hard bond engineered for cured concrete, so the blade keeps cutting instead of glazing over when the slab gets tough. Keyhole cooling gullets pull heat and slurry out of the cut, and a precision-tensioned steel core keeps it running true. Run it wet or dry on anything from a 4" angle grinder to a 20" walk-behind saw and get fast, clean cuts in concrete, reinforced concrete, brick, block, pavers and stone.
Laser-WeldedWet or Dry4" to 20" · 12 Sizes7/8"-5/8" & 1" ArborFree Shipping
Why the Viper Is the Go-To Concrete Diamond Blade
Laser-Welded SegmentsSegments are laser-welded to the steel core, not brazed, so they stay put when cutting dry and under heavy load.
Hard-Bond Concrete MatrixA diamond bond tuned for cured and reinforced concrete, brick, block, pavers and stone – it holds its edge where softer bonds wear out.
Keyhole Cooling GulletsGullets between segments pull heat and slurry out of the cut so the blade runs cooler, cuts faster and tracks straight.
Wet or Dry CuttingWater-fed on a walk-behind or table saw for maximum life, or dry on a grinder or handheld cut-off saw with no mess.
12 Sizes, Every Saw4", 4.5", 5", 6", 7", 8", 9", 12", 14", 16", 18" and 20" – one blade family for angle grinders, circular saws, cut-off saws and walk-behind saws.
Contractor-Grade ValuePro performance at a working man's price. Trusted by 10,000+ contractors and shipped free.
What the Viper Concrete Blade Cuts
Rated by our blade techs for concrete contractors, masons, hardscapers and demolition crews who need a blade that stays sharp in hard material.
Cured Concrete◆◆◆◆◆ Slabs, footings, curbs, walls
Reinforced Concrete◆◆◆◆◇ Rebar and wire mesh
Brick◆◆◆◆◆ Clay and fire brick
Block / CMU◆◆◆◆◆ Cinder block, lintels
Pavers◆◆◆◆◆ Concrete and brick pavers
Stone◆◆◆◆◇ Granite, bluestone, limestone
The Viper is a hard-bond concrete blade. For abrasive asphalt or green concrete, choose the Patriot combo diamond blade. For heavy rebar, hard aggregate or all-day production sawing, step up to our PRO line concrete blades.
Viper Concrete Diamond Blade Specifications
| Diameter | SKU | Arbor | Segment Height | Max RPM | Max Cut Depth* | Best On |
|---|---|---|---|---|---|---|
| 4" (100mm) | A0240-4 | 7/8" with 5/8" bushing | 10mm | 15,000 | 1" | 4" angle grinders |
| 4.5" (115mm) | A0240-45 | 7/8" with 5/8" bushing | 10mm | 13,300 | 1-1/4" | 4-1/2" angle grinders |
| 5" (125mm) | A0240-5 | 7/8" with 5/8" bushing | 10mm | 12,200 | 1-1/2" | 5" angle grinders |
| 6" (150mm) | A0240-6 | 7/8" with 5/8" bushing | 10mm | 10,200 | 2" | 6" grinders & circular saws |
| 7" (180mm) | A0240-7 | 7/8" with 5/8" bushing | 10mm | 8,700 | 2-1/2" | 7" circular saws, grinders, tile & masonry saws |
| 8" (200mm) | A0240-8 | 7/8" with 5/8" bushing | 10mm | 7,600 | 2-3/4" | 8" masonry & tile saws |
| 9" (230mm) | A0240-9 | 7/8" with 5/8" bushing | 10mm | 6,800 | 3-1/4" | 9" angle grinders & masonry saws |
| 12" (300mm) | A0240-12 | 1" with 20mm bushing | 10mm | 6,300 | 4-1/2" | 12" handheld gas & electric cut-off saws |
| 14" (350mm) | A0240-14 | 1" with 20mm bushing | 10mm | 5,400 | 5" | 14" cut-off saws, walk-behind saws, masonry table saws |
| 16" (400mm) | A0240-16 | 1" with 20mm bushing | 10mm | 4,800 | 6" | 16" walk-behind & high-speed saws |
| 18" (450mm) | A0240-18 | 1" with 20mm bushing | 10mm | 4,200 | 7" | 18" walk-behind floor saws |
| 20" (500mm) | A0240-20 | 1" with 20mm bushing | 10mm | 3,800 | 8" | 20" walk-behind floor saws |
| Blade type | Segmented concrete diamond blade with keyhole cooling gullets |
| Segment attachment | Laser-welded |
| Bond | Hard bond – engineered for cured concrete and masonry |
| Cutting method | Wet or dry |
| Applications | Cured concrete, reinforced concrete, brick, block, pavers, stone |
| Tier | Standard / contractor grade – light to medium-duty concrete cutting |
| Brand | Diamond King Tools |
*Cut depths are approximate and depend on your saw. Always match blade diameter and maximum RPM to the saw's rating.
Which Size Viper Blade Do I Need?
- 4", 4.5" & 5" concrete blades – for angle grinders. Tuck pointing, cutting block and pavers to size, notching, chasing and small demo work.
- 6", 7", 8" & 9" concrete blades – for larger grinders, 7" circular saws and masonry/tile saws. Scoring slabs, cutting pavers, block and brick on the saw table.
- 12" concrete blade – the lightest, fastest-spinning option for 12" handheld gas cut-off saws and electric demo saws. Curb cuts, pipe trenches and demolition.
- 14" concrete blade – the jobsite workhorse. Fits 14" handheld cut-off saws (Stihl, Husqvarna, Makita, Hilti and others), small walk-behind saws and 14" masonry table saws.
- 16", 18" & 20" concrete blades – maximum depth for walk-behind floor saws when you need to get through thick slabs in one pass.
Pro Tips for Longer Blade Life
- Check the arrow on the blade and mount it in the direction of rotation. Tighten the flange nut and spin the blade by hand before starting.
- Let the blade do the work. Light, steady pressure cuts faster than forcing it and keeps segments from glazing.
- Cutting dry? Make short passes and back out of the cut every 30–45 seconds to let the blade cool.
- If the blade starts to cut slowly, dress the segments with a few passes in a soft, abrasive material (a concrete block or sand brick) to re-expose fresh diamonds.
- Never exceed the max RPM stamped on the blade, and always wear eye, hearing and respiratory protection.
Diamond King Ranking: 5 / 5Our best-selling diamond blade. The go-to concrete blade for contractors, masons and DIYers alike.
Viper Concrete Diamond Blade FAQ
What is the Viper diamond blade best for?
The Viper is a hard-bond, laser-welded segmented blade built for cured concrete. It also excels in reinforced concrete with light rebar, brick, block, concrete and brick pavers, and natural stone. It is the blade most of our concrete contractors, masons and hardscapers keep on the saw every day.
Can I cut the Viper blade wet or dry?
Both. The segments are laser-welded, which makes the blade safe for dry cutting on angle grinders and handheld cut-off saws. Cutting wet on a walk-behind or masonry table saw extends blade life, keeps the blade cool and eliminates silica dust, so use water whenever your saw and jobsite allow.
What saws does the Viper blade fit?
The 4" through 9" sizes come with a 7/8" arbor and 5/8" bushing to fit angle grinders, circular saws and masonry saws. The 12" through 20" sizes have a 1" arbor with a 20mm bushing for gas and electric cut-off saws (Stihl, Husqvarna, Makita, Hilti, Partner), walk-behind floor saws and masonry table saws. Match the blade diameter to your saw's rated size and confirm the saw's max RPM does not exceed the blade's.
How deep will the Viper cut?
Roughly 1" to 3-1/4" with the 4"–9" grinder and circular saw sizes, 4-1/2" with a 12" blade, 5" with a 14" blade, 6" with a 16" blade, 7" with an 18" blade and 8" with a 20" blade, depending on your saw's guard and arbor flange.
Will it cut rebar or reinforced concrete?
Yes. The Viper will handle light to moderate rebar and wire mesh in reinforced concrete. For heavily reinforced concrete, very hard aggregate or all-day production sawing, a PRO-tier concrete blade will last longer and cut faster.
Can I cut asphalt with the Viper?
The Viper is a hard-bond concrete blade, so abrasive asphalt and green concrete will wear its segments faster than they should. For asphalt, asphalt over concrete or green concrete, choose the Patriot combo diamond blade, which uses a combination bond for both materials.
How long does the Viper diamond blade last?
Blade life depends on material, saw horsepower, water use and operator technique. Cutting wet with steady pressure gives the longest life; forcing the blade or cutting dry non-stop shortens it. Laser-welded 10mm segments give the Viper plenty of usable diamond for everyday contractor work.
Why is my blade cutting slowly or glazing?
Glazing happens when the bond does not wear fast enough to expose new diamonds, usually from cutting very hard material or applying too little pressure. Make a few cuts in a soft abrasive material such as a concrete block or sand brick to dress the segments, then return to your cut.
What is the difference between the Viper and the Patriot?
The Viper is a hard-bond blade built for cured concrete and masonry; the Patriot is a combination bond built to cut asphalt and concrete with one blade. If most of your cutting is cured concrete, block, brick, pavers or stone, the Viper is the better choice. If you switch between asphalt and concrete all day, go with the Patriot.
Do you offer free shipping and volume pricing?
Yes, every Viper blade ships free. Contractors and distributors buying in quantity can call 1-877-700-2022 or email [email protected] for volume pricing and a credit application.
Trusted by 10,000+ contractors. Free shipping on every Viper blade.Need help picking a size or want contractor pricing? Call 1-877-700-2022 or email [email protected].
More Information
| Arbor | 7/8"-5/8" |
|---|---|
| Rim Thickness | .080 |
| Segment Height | 10mm |
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