Virginia Abrasives 14-Inch Asphalt Diamond Blade (Undercut Protected)
Model: 425-03078
Hard-bond 14-inch asphalt and green-concrete blade with undercut protection on the core. Built for the abrasive slurry that eats steel cores on soft substrates.
14″ · 1″ arbor (20mm bushing) · max 5,500 RPM · hard bond · wet-or-dry
★★★☆☆ 3 (1 ratings on Amazon)
$102.99
Price last checked 2026-09-22 — confirm on Amazon
Buy the 14″ on Amazon →On This Page
Specifications
| Brand | Virginia Abrasives |
|---|---|
| Model # | 425-03078 |
| Diameter | 14" |
| Arbor | 1" (bushings: 20mm) |
| Max RPM | 5,500 |
| Bond | hard |
| Segment Type | segmented |
| Segment Height | 7 mm |
| Wet/Dry | wet-or-dry |
| Application | asphalt, green-concrete |
| Fits saws | Stihl TS 420, Husqvarna K 770, Husqvarna K 970, Husqvarna K 760, Milwaukee MX FUEL COS350, Hilti DSH 700-X, Makita EK7651H, Stihl TS 500i |
Blade life: No figure. VA publishes none and we have not measured it. For comparison, this site plans on 200-400 feet on asphalt for the BD Asphalt blade, a planning range rather than a VA figure.
✓ Best for
High-volume asphalt and green-concrete cutting where core undercutting, not segment wear, is what retires your blades.
✗ Not for
Cured concrete, where a hard bond glazes. Occasional asphalt work, where the cheaper BD blade covers it.
Pros
- Undercut protection on the steel core, which targets the specific failure mode of abrasive soft-substrate slurry
- Hard bond correctly matched to asphalt and green concrete
- Rated for both high-speed handheld and walk-behind saws
Cons
- 7mm segments, the shortest of any VA 14-inch blade we list — less diamond depth to wear through
- $102.99 against $63.38 for the BD Asphalt blade, which has 12mm segments and the same hard bond
- One Amazon rating at 3.0 stars, which is no basis for judgment in either direction
Part 425-03078 is Virginia Abrasives’ higher-priced 14-inch asphalt and green-concrete blade, and its distinguishing feature isn’t the segments. It’s the core.
What the specifications say
Fourteen inches, 1-inch arbor with 20mm bushing, 7mm laser-welded segments, hard bond, undercut protection on a steel core, rated for high-speed and walk-behind saws, wet or dry. Price $102.99, with a single Amazon rating at 3.0 stars.
The trade this blade is making
Asphalt and green concrete are soft and abrasive, and the correct bond for them is hard. This blade has one, and our buying guide explains why. Where it diverges from the cheaper BD Asphalt / Green Concrete blade is the failure it is engineered against.
On soft substrates the slurry coming off the cut is aggressive enough to erode the steel core immediately behind the segments. When that happens, segments can separate while usable diamond is still on them, so the blade gets retired by core damage rather than by segment wear. Undercut protection targets that.
The cost of the trade is visible — 7mm of segment against the BD’s 12mm, at $102.99 against $63.38. That’s materially less diamond for materially more money, with core protection as the offsetting benefit. Whether that math favors this blade depends on which failure actually retires blades on your jobs, and we haven’t run both to find out.
Who should consider it
High-volume asphalt crews who recognize the core-undercutting failure from experience — blades coming off the saw with segment height left on them. If your asphalt work is occasional, or if your blades wear out normally through their segments, the BD blade gives you far more diamond per dollar for the same bond and the same substrate.
Disclosure
Matt Lipman is CEO of Capstone Holdings Corp. (NASDAQ: CAPS) and a board member of Virginia Abrasives. He discloses this relationship on every page that recommends a VA product. We have not field-tested this blade, and where the specifications favor the cheaper VA alternative, this page says so.
Matt.
Frequently Asked Questions
How is this different from the BD Asphalt / Green Concrete blade? ▼
Both are VA hard-bond blades for the same substrates. The visible differences are segment height, 7mm here against 12mm on the BD, the core treatment, since this one lists undercut protection, and the price, $102.99 against $63.38. Undercut protection targets the steel core immediately behind the segments, which is where abrasive slurry erodes a blade on soft substrates. On paper the BD gives you far more diamond depth per dollar, and this blade gives you core protection the BD does not advertise.
What is undercutting and why does it matter on asphalt? ▼
Undercutting is wear to the steel core just behind the diamond segments, caused by abrasive slurry washing past. On soft, abrasive substrates like asphalt and green concrete the slurry is aggressive enough that a blade can lose its core before it wears out its segments, which means the segments separate while diamond is still left on them. Protective features on the core are aimed at that failure rather than at cutting speed.
Can I use it on cured concrete? ▼
You can, but you should not plan to. A hard bond on hard, dense material does not erode fast enough to expose fresh diamond, so the blade glazes and stops cutting. Cured concrete wants a medium bond. Use the Ultra Value, Basic Diamond, or Medium Bond blades for that work.
Is 7mm of segment enough? ▼
It is less diamond to wear through than any other 14-inch blade in VA's live range, which on its own means fewer linear feet before replacement. Whether the core protection offsets that on high-volume asphalt work is exactly the question we cannot answer without running both blades side by side, and we have not. We have not measured this blade and publish no linear-foot number for it.
Alternatives
Virginia Abrasives 14-Inch BD Asphalt / Green Concrete Diamond Blade
Hard-bond 14-inch diamond blade engineered for asphalt + green concrete. Alternating drop segments + U-slot gullets clear sticky tar slurry.
$63.38
Virginia Abrasives 14-Inch Supreme Pro Diamond Blade
VA's Supreme-tier 14-inch blade, its professional line, listed for concrete and asphalt on a single bond. Laser-welded, 10mm segments, no Amazon ratings yet.
$104.88
More picks in our roundup: best diamond blades asphalt