DART Red Ten BM-15 diamond blade with a 15mm segment height for serious cutting performance in concrete, granite, paving, brick, clay and roof tiles. Available in multiple sizes from 115mm to 450mm. Built for professional use.
Size
Price
QTY
115mm x 22mm
£27.86£33.43
125mm x 22mm
£33.95£40.74
230mm x 22mm
£64.50£77.40
300mm x 20mm
£79.73£95.68
350mm x 20mm
£119.56£143.47
350mm x 25mm
£119.56£143.47
400mm x 20mm
£129.80£155.76
400mm x 25mm
£129.80£155.76
450mm x 25mm
£149.16£178.99
The DART Red Ten BM-15 is a professional-grade diamond blade designed for demanding cutting work across a wide range of hard materials. With a 15mm segment height, this blade sits in the upper tier for segment depth, giving it noticeably longer working life compared to standard blades with 10mm or 12mm segments. If you’re cutting day in, day out on site, that extra material in the segment pays for itself in reduced blade changes and less downtime.
The Red Ten range has been around for more than two decades, which in the diamond blade market says something. There are no shortage of cheap blades that promise the world and last about a morning. The BM-15 has earned a reputation for consistent cutting speed, predictable wear, and the kind of durability that means you’re not gambling every time you fit a new blade to the saw.
What the DART Red Ten BM-15 Diamond Blade Cuts
This blade handles an honest range of materials without needing to compromise. It cuts concrete, reinforced concrete, granite, clay, paving slabs, brick, and roof tiles. That covers most of what you’d encounter on a general building or civils job. Whether you’re cutting kerb stones, trimming paving, or working through engineering brick, the BM-15 delivers clean, fast cuts without the blade glazing or loading up.
The blade is particularly well suited to abrasive materials like sandstone and some types of brick that cause cheaper blades to wear unevenly. The 15mm segment tolerates that abrasion better and maintains cutting speed for longer before performance starts to drop off.
Sizing Options for Different Saws
The BM-15 is available in sizes from 115mm up to 450mm, covering angle grinders, larger hand-held disc cutters, and floor saws. The smaller sizes with a 22mm bore are the standard fit for 115mm and 125mm angle grinders. The larger 300mm to 450mm versions with 20mm or 25mm bores are aimed at disc cutters and floor saws where you need serious depth of cut on slabs, concrete, or road surfaces. Whatever you’re running on site, there’s likely a size that fits.
The DART Red Ten BM-15 concrete diamond blade is a sensible choice when you need reliable cutting performance across multiple material types without buying a separate blade for each job. It won’t last forever no blade does but it will give you a fair return on the price and handle the kind of mixed-material cutting that’s typical on most UK building sites. A blade worth keeping a spare of in the van.
Pro Tip: When cutting reinforced concrete with the BM-15, run the blade at full speed before contact and use light, consistent pressure rather than forcing the cut, as pushing too hard into rebar causes the segment to impact unevenly and significantly shortens blade life.
The DART Red Ten BM-15 is used on building sites, civils projects, landscaping work, and roofing jobs where a reliable multi-material cutting blade is needed. It is a common choice for cutting concrete, paving slabs, kerb stones, granite sets, clay and engineering brick, and roof tiles. Groundworkers, bricklayers, roofers, and general builders all use this blade as a go-to for jobs where they need consistent performance across different materials without swapping blades constantly. Floor saw operators working on concrete slabs and road surfaces will find the larger diameter versions well suited to extended cutting runs.
Best For
Concrete and reinforced concrete
Granite and natural stone
Paving slabs and kerb stones
Clay and engineering brick
Roof tiles
Floor saw applications (larger sizes)
Available Sizes
115mm x 22mm bore
125mm x 22mm bore
230mm x 22mm bore
300mm x 20mm bore
350mm x 20mm bore
350mm x 25mm bore
400mm x 20mm bore
400mm x 25mm bore
450mm x 25mm bore
Key Features
15mm segment height for extended blade life
Fast cutting speed across hard materials
Suitable for angle grinders, disc cutters and floor saws
Part of the Red Ten range with 20+ years in the market
Multi-material capability reduces blade changes on site
Not suitable for: Not designed for cutting wood, plastics, or soft metals. For precision tile work or porcelain where surface finish is critical, a dedicated tile blade will give better results.
Fit the correct blade size for your machine and ensure the bore matches your saw's spindle. Always run the blade up to full speed before bringing it into contact with the material. Use steady, forward pressure and let the blade do the work. Forcing the cut shortens segment life and increases the risk of blade distortion.
For wet cutting applications where the machine allows it, use a water feed to cool the blade and suppress dust. Dry cutting is suitable for shorter runs, but allow the blade to cool between cuts on extended work. When cutting reinforced concrete, reduce feed pressure as the blade contacts rebar to avoid impact damage to the segment bond.
Check the blade size and bore match your machine before fitting
Fit the blade securely with the arrow indicating direction of rotation matching the saw's spindle direction
Start the saw and allow the blade to reach full operating speed before touching the material
Begin the cut with light contact, then apply consistent forward pressure without forcing
For wet-cut capable machines, engage water feed to extend blade life and reduce dust
Allow the blade to cool between cuts during prolonged dry cutting work
Inspect the segment condition regularly and remove the blade from service if segments are damaged or worn unevenly
What is the significance of the 15mm segment on the BM-15 compared to a standard blade?
Most general-purpose diamond blades have segment heights of 10mm to 12mm. The BM-15's 15mm segment provides more diamond-bearing material, which means the blade wears down more slowly and lasts longer in service. This is particularly noticeable when cutting abrasive materials like sandstone, granite, or recycled concrete aggregate.
Can the BM-15 be used on a floor saw as well as an angle grinder?
Yes. The smaller sizes (115mm and 125mm) are designed for angle grinders, the 230mm size suits larger hand-held disc cutters, and the 300mm to 450mm versions with 20mm or 25mm bores are suitable for floor saws and large disc cutters used in groundworks and road cutting applications.
Is the DART Red Ten BM-15 suitable for cutting roof tiles?
Yes, roof tiles are listed among the materials this blade handles well. Both clay and concrete roof tiles can be cut cleanly with the BM-15. Use the appropriate size for your machine and keep cuts controlled to avoid tile cracking from excessive vibration.
The DART Red Ten BM-15 diamond blade features a sintered segment construction with a 15mm segment height bonded to a steel core. The segment matrix is formulated to balance cutting speed with wear resistance across a wide range of aggregate-bearing and abrasive materials including concrete, granite, and clay. The blade is manufactured to consistent tolerances across the size range and is compatible with both wet and dry cutting applications depending on the host machine.
Brand
DART Red Ten
Model
BM-15
Segment Height
15mm
Available Sizes
115mm, 125mm, 230mm, 300mm, 350mm, 400mm, 450mm
Bore Options
20mm, 22mm, 25mm
Application
Wet and dry cutting
Box Quantity
1
Product Type
Multi Material Diamond Blade
Size
300mm x 20mm, 350mm x 20mm, 350mm x 25mm, 400mm x 20mm, 115mm x 22mm, 125mm x 22mm, 230mm x 22mm, 400mm x 25mm, 450mm x 25mm
Box Quantity
1
Product Type
Multi Material Blades
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