Diablo SandNet 5-In. 400-Grit Sanding Discs with Connection Pad, 40-Pack are for achieving a smooth final surface finish and intercoat final finishing. Designed with a universal hole pattern, these discs fit all 5 and 8 hole sanders, making them versatile for various sanding tools. They feature a clog-reducing NET design combined with a premium ceramic grain blend that effectively reduces dust buildup while delivering fast material removal, ensuring a longer sanding life. These sanding discs are reusable and come with a convenient connection pad for easy attachment to your sanding tool, enhancing both efficiency and user experience. Model Number: DND050400H40I