ITEM NAME:Acoustic Guitar DIY Tools Combo With Guitar Files For Nut Acoustic Guitar B S6S4 Acoustic Guitar DIY Tools Combo With Guitar Files For Nut Acoustic Guitar B S6S4 Cattle bone saddle size: 72mmX3mmx9mm; Cattle bone nut size: 42.5mmX6mmX8.5mm. Stainless Steel Files: Made of high-quality steels, perfect tools filing string slots into nut and bridge. Files Size: 0.4mm / 0.5mm / 0.6mm / 0.7mm/ 0.8mm / 0.9mm / 1.0mm / 1.1mm / 1.2mm / 1.4mm / 1.6 mm, 25mm grinding length and 30mm length of the hilt. Sand Paper: 70mm*90mm, 9 pcs (3 pcs 320 grit, 6 pcs 240 grit). For polish saddle, nut, string and so on. color:White 100% Cattle bone guitar saddle and nut: High quality guitar saddle and nut of bone is harder and lasts much longer than palstic one, it can increased brightness and even added bass, This is because the hardness of the material transfers the vibration of the string to the top of the guitar with more efficiency. and the bone at the saddle and nut will definitely increase the loudness and dynamics, it may actually increase the high frequency content of your guitar, and its way prettier too. Steel Stainless Files: This is a handy set of round files, originally intended for cleaning the tips of torch welders, but absolutely perfect for filing string slots into nuts and bridges! The self-contained set features a range of 13 sizes( from 0.4mm - 1.6mm). Please Note: These files, especially the smaller ones, are thin diameter and bend easily. As such, some care is recommended when using them, so that they will last you a good while. 3) 9pcs Sand Paper: The Sand Paper let you can adjust the high of your saddle and nut anytime, you can use it polish the finger board, fret, side, strings etc also. Size: 70mm*90mm Quantity: 9 pcs (3 pcs 320 grit, 6 pcs 240 grit). Package include: 1 pcs x Guitar nut 1 pcs x Guitar saddle 9pcs x Sand Paper 1 set x rasp Note: Light shooting and different displays may cause the color of the item in the picture a little different from the