Expert choice: 5 inch abrasive discs are manufactured with high precision molding, stamping and grit dispensing machinery to exacting standards. Each orbital sander disc has undergone strict quality control before shipping to ensure compliance with safety standards and project needs. Wear-resistant grits: with the grits wear-resistant alumina and 3 times durability Adopted on the resin matrix reinforced with fiber mesh, the hook and loop sanding disc can sand more aggressively on the surface of any material, more durable than ordinary 8-hole sanding discs. Precise and Efficient Sanding: The 5 inch hook-and-loop sanding disc can perform efficient and smooth sanding without leaving streaks or burrs on the surface, reducing material loss and quickly helping to prepare the materials and parts needed to improve your efficiency High performance and safety: thanks to the special alumina grains and With the fiber-backed resin matrix, the powerful sanding disc can quickly dissipate the heat