Description: 10 piece frets nut file tool: cover full range of shaping,forming,carving,engraving.Used for the neck, string nails, wire, DIY bridge, etc. Grinding stone and fingerboard protector: Professional for polishing saddle, nut and frets. Easy and safe to polish,clean and repair guitar frets. Grinding Sponge: can grind and polish all metal things, soft and can be washed. Package: kraft box Material: Metal,Stone,Sponge,ABS Color: As Picture Show Size Chart: Polishing File Length: Approx. 14cm/5.51inch Grinding Sponge Size(L X W X H): Approx. 100*75*25mm/3.94*2.95*0.98inch Grinding Stone Size(L X W X H): Approx. 98*12*12mm/3.86*0.47*0.47inch Fingerboard Protector Gasket: Approx. 7.8*2.2cm/3.07*0.87inch 1.3*0.1cm/0.51*0.04inch String Nail Size(L x W x H): Approx. 32*8*8mm/1.26*0.31inch String Nail Caliber: Approx. 5mm/0.20inch Package Includes: 10 Piece Frets Nut File 1 Piece Grinding Sponge 1 Piece Grinding Stone 2 Piece String Polishing Gasket 6 Piece ABS String Nail Note: Please allow 1-3mm differs due to manual measurement. Due to the different display and different light, the picture may not reflect the actual color of the item. Thanks for your understanding