●string oil can avoid the string rusting.It will avoid the noise while playing guitar. ●Lem oil can remove dirt,grease and deposited glazing wax;Take care of musical instruments and resist dryness,extend the life of the instrument. ●Guitar polish spray can be used on all types of guitars and is very safe to use on any paint surface. ●Our unique polishing can remove the oxidation marks of guitar metal parts (frets,pickups,etc.) and reproduce their brilliance. ●Neutral cleaner and care oil used to protect the guitar