Milwaukee’s Diamond Grit line delivers 15x longer life than standard carbide grit blades for grout removal. That’s not marketing fluff — the Diamond MAX technology uses higher-grade diamonds with superior heat and fracture resistance, plus a unique bonding process that improves diamond retention on the blade surface. For contractors grinding through grout day after day, this translates to fewer blade changes and more billable hours.
The standout product is the OPEN-LOK 49-25-2272 grout removal blade. It features a reinforced Universal Fit OPEN-LOK anchor that provides stronger grip and rapid blade changes. The blade is designed to snap into the multi-tool spindle for quick-change capability across 100+ non-Starlock oscillating tools, including Milwaukee M12 and M18 multi-tools plus major brands like DeWalt and Makita. Skip this if you’ve got Starlock tools — it won’t fit.
Diamond Technology That Actually Matters
The curved edge design allows for more control when cutting and faster grout removal, while the raised anchor and segmented design enables flush cutting and corner work without over-cut. This matters when you’re working against expensive tile or natural stone. One slip with a standard carbide blade and you’re explaining repair costs to the homeowner.
| Specification | Value |
|---|---|
| SKU | 49-25-2272 |
| Length | 3.88 inches |
| Kerf | 1/8 inch |
| Weight | 0.08 lb |
| Coating | Black-oxide for corrosion resistance |
The real-world performance backs up the specs. Red Tool Store shows 1,024 customer reviews averaging 4.56 stars — though some of those reviews might be site-wide ratings. Milwaukee’s own site shows a concerning 1-star average from one reviewer who reported rapid wear on a small area. One bad review doesn’t kill a product, but it’s worth noting.
Diamond Plus Hole Saws: Built for Tile and Stone
Milwaukee’s Diamond Plus hole saw line tackles a different problem — clean holes through tile, stone, and glass. These deliver up to ten times longer life compared to standard hole saws, thanks to higher-grade diamonds and an improved braze that enhances diamond retention and fracture resistance.
The large slot geometry facilitates easy plug removal — critical when you’re drilling multiple holes and can’t waste time digging out cores. Available in sizes from 3/16” to 2-1/2”, with some requiring an additional arbor, they’re compatible with standard chuck drills.
Common use cases involve drilling anchoring and clearance holes in challenging materials like tile, stone, and glass, where precision, heat resistance, and edge quality are critical. This is the tool for bathroom renovations, backsplash installations, and anywhere you need clean holes without chipping expensive materials.
Who Should Buy Diamond Grit
Worth it for tile contractors, bathroom remodelers, and anyone doing high-volume grout removal. The 15X life improvement means you’re changing blades once a month instead of twice a week. At Montana’s construction wages, the time savings alone justify the premium.
Skip it for one-off bathroom jobs. Standard carbide works fine for occasional use. But for contractors bouncing between Whitefish luxury homes and Kalispell multi-family projects, Diamond Grit pays for itself in reduced downtime.
Milwaukee accessories are generally guaranteed against defects in material and workmanship but don’t typically carry a specific multi-year warranty like Milwaukee power tools. Standard accessory warranty, but with 15X the life, you’re less likely to need it.
FAQs
Q: Will these fit my oscillating tool? The Universal Fit OPEN-LOK anchor works with 100+ non-Starlock oscillating tools including Milwaukee M12 and M18 multi-tools plus major brands like DeWalt and Makita. Not compatible with Starlock-type tools.
Q: How much longer do Diamond Grit blades really last? Milwaukee claims 15x longer life than standard carbide grit blades for grout removal. Real-world results vary based on material hardness and technique, but even half that improvement changes the economics of grout work.
Q: What’s the actual diamond technology? Diamond MAX uses higher-grade diamonds for superior heat and fracture resistance, plus a unique bonding process that improves diamond retention on the blade surface. The diamonds stay put instead of falling off mid-job.
Q: Are Diamond Plus hole saws worth the premium for tile work? They deliver up to 10 times longer life compared to standard hole saws. For contractors drilling multiple holes daily, that’s fewer tool changes and cleaner cuts. Weekend warriors can stick with standard hole saws.
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