Seikoh Giken PR5X-500-90 Polishing Rubber Pad, 3pcs/set is an ultra-high hardness polishing pad designed for the most demanding fiber optic connector polishing applications. With a 90-durometer hardness, it provides exceptional rigidity and minimal surface deformation, ensuring precise and stable pressure control during the polishing process. This allows for superior end-face geometry, low insertion loss, and high repeatability. Manufactured by Seikoh Giken, a global leader in fiber optic polishing technology, each set includes three durable rubber pads, perfect for use in high-volume production lines or precision-focused laboratory settings.