Guitar Nut Slot Files, Guitar Bridge and Saddle Nut Files Set for Guitar Repair Tool, Guitar Maintenance and Repair Tools Feature: -100% brand new and high quality. -Easy nut slotting and filing. -Perfect for filing string slots into nuts. -Set of 13 string size 1-13 With the longer shaft length it makes them easier handling for filing string slots. Specification: Material: Stainless steel Each rod length approx:55mm Diameters: .0.4mm-1.6mm as shown in the pictures Weight:12g Note:That these files are especially the smaller ones are thin metal can easily bend and need work slow for smoother slots. Care is recommended when using them so that they will last you a good while. Use is for wood and bone, and soft metals such as brass, copper only. Not recommended for hard or ferrous metals. 1 piece of guitar upper pillow pillow groove grinding file + 13 string groove metal round rubbing knife + 9 pieces of sandpaper (3 pieces of 320 mesh, 6 pieces of 240 mesh) + 1 white plectrum DIY guitar repair accessories tools Grinding file 0.4-1.6mm: in bag Packing size: 8*4*1cm Weight: 15g File + sandpaper + plectrum set: in bag Packing size: 12*10*1.5cm Weight 32g Package included: 1 x Set of 13 string saw rods/File + sandpaper + plectrum set.