The tools are specifically designed for metal work, however they can also be used for a large range of other materials with satisfactory results.Needle Files Specifications:Tool face material: Titanium & diamond plated steel.Handle Material: Softer rubber over steel shaft.Shank diameter: 3mm.Tool length: 140mm.Working face length: 70mm.Grit#: 150.10 piece file set.Product type: Metalworking needle file set.
