ITEM NAME:Nut Saddle Guitar Acoustic Guitar Piece Bone File Nuts Description: This is a handy set of 13 round files( for the depth of string slots) and 1 x flat file( for the height of nut and bridge) 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 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 Good accessories for Acoustic Guitar Material: Stainless Steel & Buffalo Bone & Sand Paper Size Chart: File Nuts Length: Approx. 6 cm/2.36 inch Saddle Length: Approx. 7.2 cm/2.83 inch Nuts Length: Approx. 4.2 cm/1.65 inch Sand Paper(L x W): Approx. 9.2x5.7cm/3.62x2.24 inch Package Includes: 1 Set File Nuts 1 Piece Guitar Nut 1 Piece Guitar Saddle 9 Pieces Sand Paper(3 pieces 320 grit, 6 pieces 240 grit) Note: Due to manual measurement, there may be 1-2mm error in size SKU: DMO0015817161002262.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. Good accessories for Acoustic Guitar. This is a handy set of 13 round files( for the depth of string slots) and 1 x flat file( for the height of nut and bridge).