The ToneGear String Cleaner Tool for bass guitar safely and effectively preserves the tone and extends the life of your stings. It works on all sizes and brands of bass guitars. The String Cleaner is made with a specially designed microfiber pad to remove the sweat, dirt, and oils, which degrade the tone and shorten the life of your strings. It simultaneously cleans the strings and fretboard of your electric bass. The bass string cleaner requires no additional solutions. Can be hand-washed.