1、【Innovative Two-Way Design】: Our Two-Way Radius Sanding Block is designed for sanding frets and leveling fingerboards. Each block features two different radiuses, allowing you to match 2 radiuses with one tool. It\u0027s a must-have tool for guitar and bass building and repair. 2、【High-Quality Material】: Made of high-quality maple, our sanding block is durable and long-lasting. It\u0027s not easy to deform, ensuring a high glossiness and smooth sanding experience. The groove side design provides a comfortable grip, making your work easier. 3、【Versatile Use】: This sanding block is suitable for different fret board radiuses used in guitar and bass building and repair, including 10\"\u002617\", 10\"\u002614\", and 9.5\"\u002620\". It\u0027s a versatile tool that meets your various needs. 4、【Convenient Size】: With dimensions of 200mm 75mm 30mm (7.9 x 2.9 x 1.2 inches), this Luthier sanding block is convenient to use and easy to store. It\u0027s a practical tool that won\u0027t take up much space in your toolbox. 5、【Sandpaper Included】: Each sanding block comes with 2 600 grit sandpaper, providing you with everything you need to start your work. Please confirm the size of your Guitar or Bass before purchasing to ensure the best fit. This sanding block is a great addition to any luthier\u0027s toolkit.