Contents of the kit: 6 steel files with different patterns (flat\/flat\/square\/triangle\/round\/semi-circular). Total length: 160mm, 107mm, diameter of each gear: 4mmCarbon steel material: the metal file is made of carbon steel. high hardness. The texture to fine grain of the lime has been Deeply tempered and coated to provide long-lasting cutting performance Comfortable handle: The ergonomic handle of the small grater provides a comfortable feeling when using. The soft handle is firmly fixed on the file, with a comfortable feeling, fast, safe and reliable operationPortable and durable: The metal micro file set has a textured surface. e transparent, durable and reusable. The file set needles is in a compact and sturdy plastic carrying bag, easy to store. transport and to store without taking up too much spaceWide range of applications: this file is very suitable for for wood, metal, jewellery, diamonds, mirrors, glass, tiles, ceramics, leather and plastics which require precision processing on small surfaces and narrow areas. Files hand are ideal for carpenters, engineers and hobbyists or model builders