Check the listing for details. NEW Diamond Needle Files Super Grade Shape NEEDLE FLAT. Condition: New. Listed at 4.99 USD. Balaji diamond files are used for machining hardened steels and unhardened steels or unhardened high-alloy steels, rough and fully sintered carbides, ferrite, carbon, graphite, FRP, ceramics, hard plastics, glass, etc.Best results are obtained by using these files with light contact pressure. The protrusion and uniformly high concentration of the diamond grit on the file surface ensures smooth, free cutting action and high depth of cut. Increased cutting pressure is not recommended and should be avoided as it does not result in higher rate of material removal.Product Details :· Overall Length : 160mm / Shank diameter : 5mm / Coarse grit.· Shape: NEEDLE FLAT· Product Code : BDFS1002· Made in IndiaBuy with confidence. Thank you for visiting.