Engineered for heavy-duty applications, the Z3® Zirconia Flap Discs from CGW Abrasives are a top choice for professionals seeking exceptional performance and durability. With a size of 4-1/2 x 5/8-11 and a coarse grit of 24, these Type 29 discs feature an advanced Zirconia Alumina grain that ensures rapid stock removal, making them ideal for aggressive grinding tasks. Each disc is designed with 35% more material than standard options, providing enhanced longevity and effectiveness while the innovative poly/cotton backing balances durability with a superior finish. Additionally, the active grinding aid incorporated into the design allows for cool cutting with minimal pressure, ensuring optimal results across a variety of steel applications. Packaged in quantities of 10, these flap discs are a reliable choice for welding and gas essentials, as well as general abrasive needs.