Trend DWS/NFPK/F Diamond Needle File - 4 Pack - Fine Diamond needle file packPrecision quality needle files as used in the British aerospace Industry and as supplied to the like of Rolls Royce.Fine 600 grit (25 micron)Guaranteed for five years.Suitable for carving tools, model engineering, small tools and removing welds. Use to file metals and plastics. Also widely used in Jewellery making industry.Pack comprises of 4 needle files, Tapered / round, tapered half flat / round, flat , triangular / tapered. Specification-Size=160 mm overall with 75 mm diamond lng.Grade=FineGrit=600 grit (nom. 25 micron)