DIY Convenient Needle Files Round Section Instrument Accessories Kit Specifications:Definitely, this tool kit has different specification file, which fits with different neck adjustment nut for polishing and grinding, and will greatly improve the sound quality of your guitar to use. Comes with guitar files, guitar sandpapers, neck adjustment nut, this tool kit is universal for repairing your guitar and for DIY parts to use it. Making metallic material, this tool set is sturdy and rust-proof. This kit includes various tools of different sizes for you to choose freely. Suitable for repairing, fixing the surface of the guitar. Item Name: Guitar Fret SetMaterial: MetalFeatures: Solid, Universal, Enhances SoundSize Details:Sandpaper: 9cm x 7cm/3.54" x 2.76" (Approx.) Upper Neck Adjustment Nut: 4.3cm x 0.6cm x 0.9cm/1.69" x 0.24" x (Approx.) Neck Adjustment Bottom Nut: 7.2cm x 0.3cm x 0.9cm/2.83" x 0.12" x (Approx.) Guitar File (With Box): 7.5cm x 2.8cm x 1.3cm/2.95" x 1.1" x (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Included:9 x Sandpapers4 x Guitar Nuts1 x Guitar is your file