Feature: 1. Polishing Block: The sanding block is a simple and quick polishing tool to repair scratches and quickly remove oxidation from the keys. 2. 4 Sides: The four sides of the sanding block are equipped with four sheets of self adhesive sandpaper of different grit sizes to achieve different levels of sanding. 3. Easy to Use: The four sides of the sanding block have 400, 600, 1000 and 1200 grit sandpaper, so you only need to change the side if you need to use a different grit. 4. Aluminum Alloy: Our grinding block is made of aluminum alloy, which is hard and resistant to wear and tear and has a long service life. 5. Wide Application: This sanding block is very suitable for electric guitar, electric bass, acoustic guitar and electric box guitar, and is a very practical instrument maintenance tool. Specification: Item Type: Guitar Polishing Block Material: Aluminum alloy Size: Approx. 125 x 38.5 x 21mm / 4.9 x 1.5 x 0.8in. Package List: 1 x Guitar Polishing Block