Features Versatile Application: Designed for use with various materials like foam, wool, and microfiber, providing flexibility with hook and loop systems for easy disc changes High Oscillation Speed: Capable of operating at up to 15,000 RPM, ensuring consistent and smooth performance for effective sanding and polishing tasks Durable PU Construction: Made from high-quality PU material, this backing pad balances rigidity and flexibility, enhancing longevity and performance across applications Robust Frequency Resistance: Engineered with steel struts in the center hub, this backing plate can endure high frequencies while delivering a flawless finish Universal Compatibility: Standardized size allows this backing pad to fit most air sanders, making it ideal for woodworking, garages, and industrial settings Features: 1、This is a measuring tool that can quickly set mechanical spindle and workpiece datum to the exact center position. 2、The probe uses full ceramic material, non？magnetic. 3、Measure at the rotary speed of 600-950rpm. 4、With wear resistant, anti-static properties. 5、High precision, long service life. Specification: Features: 1. This is a measuring tool that can quickly set mechanical spindle and workpiece datum to the exact center position. 2. The probe uses full ceramic material, non-magnetic. 3. Measure at the rotary speed of 600-950rpm. 4. With wear resistant, anti-static properties. 5. High precision, long service life. Specification: Material: Ceramic (probe), tool steel (body) Hardn: body >HRC62°, probe >HV1350 Accuracy: ±0.002mm Body diameter: 10 mm/0.4in Probe diameter: 10 mm/0.4in Total length: 86mm/3.4in Package weight: Approx. 114g/4.0oz Package list: 1 x Edge Finder Note: 1. Due to the difference between monitors and light effects, the pictures may not reflect the actual color of the item. 2. Please allow slight error due to manual measurement. Thanks for your understanding. 3. Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. Package List