6 Valtitan Needle Files Great for Metalsmiths, Metal Working & Filing This is a new set of 6 Valtitan #2 cut needle files Great for platinum, stainless steel, hard plastics or anything else that is hard Better performance on hard to file surfaces These files have a Rockwell hardness of 72 Hrc These have little or no clogging, a light knock is enough to loosen any clogging Highly resistant to corrosion Made in Switzerland Each measures approximately 7" (178 mm) long