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.
10 piece file set.
Product type: Metalworking needle file set.