Festool 490166 LS 130 Sander Radius 10 Convex Sanding Pad is designed specifically for sanding V-grooves with an inside radius of 25/64" (10 mm). This versatile sanding pad allows you to shape your own profile by customizing the blank pad to your desired contour for precise in-line sanding. It comes complete with everything needed to create profiles easily and efficiently. The StickFix mechanical fastening system ensures quick and hassle- abrasive changes, while the toolless pad change feature enables you to switch profiles swiftly and conveniently, making your sanding tasks more productive and user-friendly. Model Number: 490166