Description This item is well made of premium material for durable and practical use. The string slots will be very smooth, there will be no noise and no uneven vibration. It is a handy set of round files, originally intended for cleaning the tips of welders, but absolutely perfect for filing string slots into nuts and bridges for cigar box guitars! Feature - Color: As shown. - Material: Metal. - Size: Approx. 7.20 x 2.85 x 1.40 cm / 2.8 x 1.1 x 0.6 inch (L x W x H). - Made of Metal, easy to use, functional and practical. - Small size, it's very convenient to carry. - Perfect for filing string slots into nuts and bridges. - Suitable for acoustic guitar and electric guitar. Package listing: 1 x Guitar Ukulele Nut/Bridge Files Filing Tool Set Music Sander Grinding Files