19-piece file set - 4 flat/triangle/half-round/round files and 14 precision needle files. Ideal for cutting and polishing wood, metal, mirror, glass, ceramic tile, ceramic, leather and plastic. Tool made of high carbon steel - The carbon content of 0.75% is the optimal composition ratio of tools such as hoes/hammers. The fine grain texture is deeply tempered and coated for long lasting cutting and reaming performance. Fine molars and tightly connected handles - Uniform tooth pitch and fine textures can increase the grinding effect and save more effort. Use a fully wrapped connection process at the handle to prevent detachment during use. It is perfect for everyday metal grinding, wood boring, leather edging, handcrafting and other usage scenarios.