Description_x000D__x000D_Sanding stone is used to polishing something. It is useful to many kinds of musical instrument. Fret polishing, it gives us a nice smooth feel. Eliminate the need to mask off the entire fingerboard. tool for luthiers, guitarists, and many DIY fret workers.x000D__x000D_Feature_x000D__x000D- Color: Grey.x000D- Material: Oilstone Whetstone.x000D- Size: Approx. 15 x 3.8 x 2.5 cm.x000D- Authentic size applies for most of frets.x000D- Sanding beam for filing, polishing the frets and other parts of guitar.x000D- Made ofgrindstone, hard-wearing and sturdy.x000D- Warm Tip: Dear buyer, due to lighting effect, monitor& 39;s brightness, manual measurement, etc., there could be some slight differences in the color and size between the photo and the actual item. Sincerely hope that you can understand Thank you Packing list:3 x Oilstone Whetstone