Our flap disc features a 4.5-inch diameter and a 7/8-inch arbor size, making it compatible with angle grinders that have a maximum grinding speed of 13,300 RPM. It is designed for various applications, including grinding, blending, sanding, and finishing on a broad spectrum of materials. Previous page Next page 1 PREMIUM ZIRCONIA MATERIAL 2 FIBERGLASS BACKING 3 COARSER GRIT 4 WIDELY APPLICATION APPLICABLE MODELS 4-1/2 X 7/8-Inch universal size, suitable for most well-known brands' angle grinders,such as: DCG414B, DWE402, 9557PBX1, 1375A, GWS8-45, PC60TAG, PCE810, B+D TYPE 29 ZIRCONIA FLAP DISC Type 29 angle design makes the edge and corner grinding much more convenient,making it ideal for surface grinding and handling welds at working angles from 5 to 15°. What materials are 4-1/2 zirconia flap discs suitable for? They are typically used for rough grinding of hard materials, such as various metals, hard woods, and fiberglass. How do 40 grit zirconia flap discs compare to other abrasives in terms of durability and performance? Zirconia flap discs are known for their strength, durability, and extended life, especially under high temperatures and pressure.The 40 grit flap disc grinds at a faster speed, enabling quick material removal. What are the main applications of 40 grit flap disc grinding wheels? They're perfect for aggressive grinding and ideal for heavy-duty tasks like rough surface treatment and removing a lot of material. .Mainly, 40 grit flap discs are used for heavy-duty grinding and getting rid of burrs. Are 40 grit grinding discs suitable for use on stainless steel and ferrous metals? Yes, they are suitable for use on stainless steel, mild carbon steel, and other ferrous