all the 16 pieces file are made by Steel, the long lasting teeth were deeply milled tempered and coated for durable cutting and filing performance16 pieces file set comes with 4 files - flat/Triple-cornered/half-round/round file and 12 pieces precision needle fileall files are packed in a rugged, compact carry case for storage and portability. Each fits snugly into its respective place to prevent moving around and scrapinglong and soft handle - rubbery handle with long length to bring your comfortable handling that will allow for hours of usebuy with confidence - handy bag with a wide variety of files will allow you easily finish and enjoy woodworkingsize:34*13*4cmMaterial:steelcolour:OrangePackage Contents:4 * files12 * small files1 * brush1 * kitOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.