10" Three Square File - DIY Packaged - Second Cut, with Handle These files are for general use by machinists for filing internal angles more acute than the right angle,.
8" CORINOX Machinists File - Hand (1 Safe Edge), Cut 2 With a surface hardness of 1,200 HV (Vickers Scale), 70 HRC (Rockwell Scale), these files offer excellent wear resistance and long service life.