Heavy duty hardened alloy steel for greater durability Diamond coating for quicker work and precision file work Includes equaling, round, half round, knife, tapered round, barrette, crossing, warding, square and 3 square small micro files Multi use hobby files - Great for metal work, jewelry files, wood files Lifetime Warranty - We guarantee these files for life Edward Tools Precision 10 Piece Diamond Needle File Set is heavy duty hardened alloy steel hobby file set for metal working, wood or jewelry. This set includes all the small files you need - equaling, round, half round, knife, tapered round, barrette, crossing, warding, square and 3 square small micro files with Swiss patterns. The diamond coating makes for quicker and more precision filing work. Ergonomic plastic grip handle. This file set comes in an organizer pouch to keep all files together. Edward Tools Precision 10 Piece Diamond Needle File Set comes with a lifetime warranty.