This professional dual-head guitar string cleaner & derusting pen is designed for quick, effective maintenance of all your string instruments. Keep your strings clean, bright, and responsive, extending their lifespan and preserving optimal tone.Equipped with two functional ends, this tool allows you to perform both daily cleaning and targeted derusting. One head is ideal for wiping away dust, sweat, and grime from strings, while the other focuses on removing oxidation and surface rust for restored clarity.Combining cleaning, derusting, and basic care in a single compact pen, this all-in-one string maintenance tool saves space in your gig bag or case. It eliminates the need for multiple separate cleaners, making routine string care easier and more convenient.Perfectly compatible with electric guitar, bass, violin, acoustic guitar, ukulele, mandolin and other string instruments. Whether you are a beginner, student, or professional performer, this versatile tool helps maintain consistent playability across all your instruments.Regular use of this derusting pen helps slow down corrosion, reduce string breakage, and keep your strings smoother to the touch. Cleaner strings vibrate more freely, providing better sustain, clearer highs, and a more balanced overall sound.Color: As ShownMaterial: ABS+CottonPackage Contents:1*Full-Featured Stringed Instrument Maintenance Tool KitOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.