"Full Title: (You can use the full title key works to distinguish our products like color, size etc.)Guitar Fret Crowning File Fret File Diamond Coating Dressing Tool AccessoriesDescription:The four gauge slots are available in the sizes 1mm, 2mm, 3mm, 4mm. The 1mm slot works for very narrow frets like ukulele; The 2mm jack works with all standard guitars, basses, banjos, mandolins, and cigars; 3mm, 4mm jack works for jumbo frets Suitable for most stringed instrumentsOne flat file, works on the edge of the fret and the round end of the fretSolid wood handle: perfect grip and smooth runningDiamond to coarse abrasion for this application, the use of threshold rubbers makes the frets smooth as butteryIt is made of high quality carbon steel and heavily covered with diamond-like grit. This ensures a long service life of this fileSpecification:Material: Carbon steel + diamond grits + wooden handle;Size chart:Size: 227 x 20mm / 8.9 x 0.79 inchThe package includes:1 piece Fret Crown File"