The Jaz 3-1/2" Twist End Cup Brush is a must-have tool for metalworking welding. With its 3-1/2” twist knot cup and .020” stainless steel, (Carbon Steel Available as an Option) it can easily remove rust, paint, and other stubborn materials from metal surfaces. The 5/8”-11 thread ensures a secure fit on your angle grinder or power drill, while the 15,000 RPM max speed enables efficient and effective cleaning. This cup brush is durable and long-lasting, making it perfect for any metalworking project.