These carbide rasp blades are absolute game-changers for your oscillating tool! The 3-pack of 37mm finger triangle blades is perfect for all those tough grinding and shaping jobs that other blades can't handle. They work amazingly well on tile adhesives, cement, thin-set mortar, wood, and stone - basically all the hard materials that ruin regular blades. The carbide construction means they last way longer than standard blades, saving you money in the long run. They fit most oscillating tools including DeWalt, Bosch, Milwaukee, Rockwell, and many others (just not Bosch MX30 or Dremel MM40/MM45). The quick-release mounting makes changing blades super easy, and the rugged design ensures they can take the punishment of demanding jobs. Perfect for preparing surfaces for tile replacement, grinding down high spots in concrete, or shaping difficult materials in tight spaces where other tools can't reach. If you do any tile work, flooring installation, or general construction, having these in your toolkit will save you so much time and frustration. Seriously durable blades that actually deliver on their promises!