Available in seven shapes, Hand, Half Round, Three Square, Round, Square, Knife and Flat and two grain sizes, 120/140 and 325/400 offering the solution to finishing problems where material hardness makes conventional files ineffective. Plated with finely selected diamond powder, 120 - 150 mesh. Can be used on tungsten carbide, ceramics, carbon, glass, fibreglass and hardened steels such as stainless steel, nimonics, titanium etc.