Product Dimensions: The dimensions of the crown-shaped file are approximately 185 x 15 x 4 mm (7.3 x 0.6 x 0.16 in). The dimensions of the two fretboard protectors are approximately 77 x 22 x 1 mm (3 x 0.86 x 0.04 in) and 77 x 13 mm x 1 (3 x 0.51 x 0.04 in) respectively. High Quality: The guitar string file is made of high-quality stainless steel, which makes it last longer and work more efficiently. Protection from the Start: Protective pads for the guitar or bass neck to prevent scratches or damage, for use during sanding and polishing. The pads are very thin and suitable for protecting the fingerboard while sanding the guitar neck. Portable: Compact and portable, easy to carry and use. Features an ergonomic handle for comfortable use. An ideal companion for guitar enthusiasts for daily maintenance. Widely Applicable: Suitable for touching up frets on guitars, electric guitars, acoustic guitars, basses, ukuleles, banjos, mandolins, and more. If the frets are worn, this is a simple and effective tool to touch them up.