Got metal to cut? These Mercer Industries Type 27 depressed center cut-off wheels are built for the job. This pack gives you 25 heavy-duty wheels, each measuring 4-1/2 inches in diameter, with a 3/32-inch thickness and a 7/8-inch arbor hole. They're made with an aluminum oxide grain specifically for cutting ferrous metals (like steel and iron). The extra-thin design allows for fast, smooth cuts with less effort and power. Plus, they're double externally reinforced with high-tensile fiberglass for added safety and durability, which helps minimize vibration and prevents burrs. They fit most standard 4-1/2 inch angle grinders. Whether you're a pro in a shop or a serious DIYer, these wheels deliver reliable performance and long life. Mercer is a trusted name in abrasives, so you know you're getting quality. Stock up your workshop with this 25-pack and tackle those metal cutting projects with confidence.