This product can be a great helper for you during guitar filing and polishing. A good helper for bass guitarists, and also good for polishing other instrument. Very useful for luthiers, guitarists and many DIY guitar works. Features -Color: Assorted Color -Material: stainless steel, plastic -Size: 14.90X3.90X2.60cm/5.86X1.53X1.02in - A good substitute luthier tool for broken or worn out one. - Adopt premium stainless steel and plastic material for durable use. - Fret rocker can help you to find discrepancy in fret height and the source of fret buzz. - String spreader can get the string off your guitar during polishing or cleaning. - Practical tool set for guitar or bass repair work. Package list: 4 x sanding paper 2 x fingerboard guards 2 x string spreaders 1 x Fret Crowning File 1 x Fret Sanding Leveler Beam 1 x Fret Rocker