Description: A set of guitar grinding stone and string spreaders and fretboard protector for guitar replacement Material: Metal, rubber, millstone Color: As pictures show Suitable for luthier, guitarist, and DIY for many fret works Specification: String spreaders: Perfect tools for you to move the strings when cleaning fretboard of guitar Fretboard protector: Made of stainless steel material, bendable and lightweight, protect the guitar from scraching or damage Grinding stone: Professional tool for polishing saddle, nut and frets Size Chart: String Spreaders(L x W): Approx. 8.8 x 1cm/ 3.46 x 0.39inch Fretboard Protector(L x W): Approx. 7.7 x 2.1cm/ 3.03 x 0.82inch (The wide one), 7.7 x 1.2cm/ 0.47inch(The narrow one) Grinding Stone(L x W x H): Approx. 9.8 x 1.1 x 1.1cm/ 3.85 x 0.43 x 0.43inch Package Includes: 2 Pieces String Spreaders 2 Pieces Fretboard Protector 1 Piece of Grinding Stone Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item. Due to manual measurement, there may be 1-2mm error in size.