Designed for efficient and effective grinding, these ceramic flap discs are an essential tool for heavy-duty applications. Measuring 4-1/2 x 7/8 inches and featuring a grit rating of 40, they are engineered to handle tough materials with ease. The stiff backing construction, combined with a compacted 4-degree flap angle, allows for quieter operation and reduced vibration, making your grinding tasks more manageable. With a maximum RPM of 13,300, these discs ensure optimal performance, while the easy grinding feature allows you to quickly expose more flap material by angling the backing edge against hard metal surfaces. Ideal for professionals and DIY enthusiasts alike, this box of 10 discs from CGW Abrasives provides the reliability and durability needed for a variety of welding and gas essentials tasks.