Introducing the 3M661XU DISC 4 21/64, the ultimate solution for precision sanding and finishing needs. This innovative product is designed to deliver exceptional performance in a wide range of applications. With a diameter of 4 inches and a thickness of 21/64 inches, this disc is perfect for achieving precise results on various surfaces. Whether you are sanding wood, metal, or other materials, the 3M661XU DISC is engineered to provide a consistent finish with minimal effort. Featuring a 0.5-micron abrasive disc, this product offers superior cutting power and durability. The microparticle structure ensures efficient removal of material while reducing the risk of clogging, resulting in longer-lasting performance and reduced downtime. The 3M661XU DISC is also designed for easy attachment and removal, allowing for quick and hassle-free disc changes. Its durable construction ensures reliable performance, even in demanding applications. Experience unmatched precision and efficiency with the 3M661XU DISC 4 21/64. Upgrade your sanding and finishing process today to achieve the perfect finish every time.