The Diablo 4-1/2" 40-Grit Steel Demon Corner-Edge Flap Disc is engineered for grinding and polishing metal surfaces with extreme efficiency. Featuring a premium zirconium blend, it delivers up to 10X faster material removal compared to traditional grinding wheels. Its unique corner-edge design provides enhanced accessibility to tight, difficult-to-reach areas, ensuring optimal performance in every task. With a Type 29 conical shape, this ultra-coarse disc is ideal for aggressive grinding, offering superior control and comfort. The durable construction and innovative design make it perfect for both heavy-duty grinding and finishing, all in one simple step.