1The bridge saddle and nut are made of bone, much harder and allowing better tone quality. 2The saddle can be cut easily using a junior hacksaw and filed to the correct length for your guitar. 3Files set are made of stainless steel material, sturdy and durable, also anti-rust. 4The files set is equipped with 13 round files for polishing the string slots and making slots smooth, and 1 flat file for burnishing the nut and bridge. 5The sand paper can be used to polish the fret board, fret, sides and strings, etc, which enable you to adjust the high of saddle and nut anytime.color:#006600;Features:_x000D_The bridge saddle and nut are made of bone, much harder and allowing better tone quality. _x000D_The saddle can be cut easily using a junior hacksaw and filed to the correct length for yourguitar. _x000D_Files set are made of stainless steel material, sturdy and durable, also anti-rust. _x000D_The files set is equipped with 13 round files for polishing the string slots and making slotssmooth, and 1 flat file for burnishing the nut and bridge. _x000D_The sand paper can be used to polish the fret board, fret, sides and strings, etc, which enableyou to adjust the high of saddle and nut anytime. _x000D_Four terms coming in combo, very useful and practical for guitarists. color:#006600;Specification:_x000D_ Condition: 100% Brand New and High Quality_x000D_ Files Material: Stainless Steel_x000D_ Saddle and Nut Material: Cattle Bone_x000D_ Color: Shown as pictures_x000D_ Nut Size: Approx. 43x6x9mm/1.69x0.23x0.35inch Saddle Size: Approx. 72x3x9mm/2.83x0.11x0.35inch _x000D_13 Round Files Diameter: Approx. 0.4-1.6mm/0.014-0.061inch_x000D_ _x000D_ Sand Paper Size: Approx. 9x7cm/3.54x2.75inch _x000D_Files Quantity: 13 Round Files 1 Flat File _x000D_Sand Paper Quantity: 9Pcs(3 Pcs 320 grit, 6 Pcs 240 grit) Weight: Approx. 40gcolor:#006600;Packing List:_x000D_ 1 x Guitar Nut_x000D_ 1 x Guitar Saddle_x000D_ 1 x Files Set_x000D_ 9 x Sand Paper(3Pcs 320 grit, 6 Pcs 240 grit)_x000D_