Material: Sanding pads are made of aluminum oxide, which is strong and wear resistant, ensuring long term performance and reliabilityFirm Grip: Sander pads are simple in design, easy and quick to use, and have a firm grip to ensure that they will not fall off during use, providing you with a stable sanding experience4 Holes Design: The 4 holes design of sander pads ensures efficient work and is suitable for detailed parts and complex sanding tasksEasy to Use: Sandpaper, with high reliability and performance, is ideal for a variety of sanding applications and smooth surfaces to meet your different requirementsWide Application: Sanding sheets, professionally manufactured, stable performance, widely used for polishing or grinding metal surfaces or nonmetallic objects such as wood, rubber, glass, etc Specification: Material: Aluminum Oxide Size Chart: 16.5 cmx9.5 cm/6.50 inchx3.74 inch Package Includes: 30xMouse Sanding Pads Note: Please allow slightly errors 1-2cm differences due to manual measurement.