CGW 42102 4" X 5/8" Type 27 36-Grit Z3 Zirconia Flap Disc

The CGW 42102 4" X 5/8" Type 27 36-Grit Z3 Zirconia Flap Disc is designed for aggressive material removal on steel surfaces. It combines premium Zirconia Alumina grain with a poly/cotton backing to deliver durable performance and a consistent finish. The zirconia concentration enhances stock removal rates, making it suitable for heavy-duty grinding tasks where efficiency is valued, while the active grinding aid helps maintain cooler cutting with light pressure.

Constructed for high-demand use, this Type 27 flap disc is optimized for applications requiring a balance of material removal and surface finish. Its 4" diameter with a 5/8"-11 arbor makes it compatible with common angle grinders in many shop settings. The 36-grit designation positions it for rapid material removal with a coarse finish, appropriate for initial deburring, cleaning welds, or preparing metal surfaces for subsequent finishing steps. The product is packaged as individual discs within a ten-pack, which supports routine stocking and project-based needs.

When selecting this flap disc, consider the material characteristics and grinder capabilities to ensure appropriate wheel speed and pressure. The specified RPM of 15300 provides the operating speed guidance typical for 4" zirconia flap discs on steel, and it should be matched to your tool’s maximum rating. Since the data does not provide additional details on certifications, dimensions beyond the stated size, or warranty, verify compatibility with your equipment and project requirements before use.

Features:

• Premium Zirconia Alumina grain on poly/cotton backing for durability and finishing quality
• High stock removal with aggressive grinding performance
• Fastest stock removal in the marketplace for steel applications
• Active grinding aid for cool cutting with light pressure
• Type 27, 4" diameter, 5/8-11 arbor, 36-grit
• Suitable for heavy-duty applications and demanding use