Description: 10pcs guitar file fret nut saddle slot grinding set + whetstone + sandpaper block + guitar fingerboard fret protector. Can be used for guitar nut, saddles, pickguard, fret and more. Grinding set contains a variety of shapes,including flat, square, round, half round, elliptical, triangle and more. Necessities tool for various guitar repairs. Material:Carbon Steel + Stainless Steel Size Chart: Whestone: Approx. 99 x 11 x 11mm / 3.90 x 0.43 x 0.43inch Fret Protector: Approx. 78 x 22mm / 3.07 x 0.87inch Approx. 76 x 13mm / 2.99 x 0.51inch Sandpaper Block: Approx. 100 x 70 x 26mm / 3.94 x 2.76 x 1.02inch Package Includes: 10 Pieces Guitar File Fret Nut 1 Piece Whestone 2 Piece Fret Protector 1 Piece Sandpaper Block