These class-leading, ultra-durable diamond hand files are available in seven shapes and two grain sizes, offering the perfect solution to finishing problems where material hardness makes conventional files ineffective. Plated with finely selected diamond powder, 120 - 150 mesh. Features and Benefits Solution to finishing problems where material hardness makes conventional files ineffective Plated with finely selected diamond powder Non-slip grip handle Typical Applications Can be used on tungsten carbide, ceramics, carbon, glass, fibreglass and hardened steels such as stainless steel, nimonics, titanium etc.