Ramrodz diamond-coated flexible flat files are micro-thin and are made specifically for general parts fitting and filing applications where standard files are inadequate.Each file has a non-slip, high-vis, ergonomic handles for comfortable use and 400 grit diamond abrasion.They can be used on metal, wood and polymer.This model has one small 6mm, medium 9mm and large 15mm.Type: Cleaning FileSize: Sm/Med/LgQuantity: 3 Per PkgLength: 9.25"Material: Diamond CoatedSuitable For: Metal/Polymer/Wood