Just finished a bathroom remodel using these 4-inch diamond grinder blades, and wow – they handled ceramic tiles like a hot knife through butter. The ultra-thin 1.5mm design gave me razor-straight cuts without chipping edges, even on those tricky curved cuts around plumbing fixtures.

What surprised me most? Cutting through an old cast iron pipe during demo. The 112 teeth design didn't just nibble – it powered through with minimal sparks and way less vibration than my old blades. Dust was noticeably lighter too, probably thanks to that 'new brazing process' they mention.

Pro tip: These shine brightest when you let the blade do the work. Pushing too hard actually slows them down. I used mine dry for quick cuts and wet for marathon sessions on quartz countertops – both worked flawlessly with my standard 100-type grinder.

One heads-up: They're honestly 4-inch blades (measured mine), not 4.5-inch as some listings suggest. But for $0.99-$1.99 per blade in this 12-pack, the value's solid. Five tiles, three pipes, and half a marble slab later, my first blade's still kicking.