Designed for high-performance grinding and finishing, the 4-1/2" Big Cat Abrasive Flap Disc from Weiler is an essential tool for professionals in the fabrication industry. Featuring a unique flap design, this disc offers 30-40% longer life compared to standard options, thanks to its self-sharpening zirconia alumina grains that excel under high temperatures and extreme pressure. The thicker phenolic backing enhances stability, making it ideal for working on carbon steel, stainless steel, and cast iron, while its compatibility with right angle grinders ensures quick and efficient changeovers. Whether you're tackling curved or irregular surfaces, this flap disc delivers a consistent finish, making it a reliable choice for any grinding or finishing application.