Made of forged T12 alloy steel for uplift hammers--- The durable teeth of the binder set are deep-hardened and coated, providing long-lasting cutting and reaming performance. 17-piece combination ---4 large files, a flat/triangle/semi-circle/round cymbal and a set of precision 12-needle files, ideal for shaping wood, metal, mirrors, glass, tiles, ceramics, leather and plastics. Portable Carrying Case---All files are packaged in a sturdy, compact and portable package that is easy to store and transport, making them ideal for woodworkers and DIY enthusiasts. Each tool is close to its respective position to prevent movement and scratching. Fine grinding and tightly connected handles---Even pitch and fine texture increase grinding and save more time. 'energy. Use a fully encapsulated connection process at the handle to prevent detachment during use. Handle Design---Ergonomically designed handles for better operation. The stable outline of the file set helps you get the job done better and faster.