Our needle files work wonderfully for a variety of jewelry making ap[applications. They can be used to file rough edges on metal beads and findings, or even to shape and detail polymer clay and PMC before and after firing. Their small size also makes them ideal for getting into confined spaces. The files are made of high-grade steel and measure approximately 5.5". Includes: 2 round, 2 Triangle, 1 knife, 1 half-round, 1 square, 1 oval, and 4 flat (2 blunt/2 tapered)