all the 16 pieces file are made by Steel, the long lasting teeth were deeply milled tempered and coated for durable cutting and filing performance 16 pieces file set comes with 4 files - flat/Triple-cornered/half-round/round file and 12 pieces precision needle file all 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 scraping long and soft handle - rubbery handle with long length to bring your comfortable handling that will allow for hours of use buy with confidence - handy bag with a wide variety of files will allow you easily finish and enjoy woodworking size:34*13*4cm Material:steel colour:Orange Package Contents: 4 * files 12 * small files 1 * brush 1 * kit Only 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.