Jet Tools' 10 in. Bastard Cut Mill Metal File is manufactured from hardened steel to deliver long-lasting durability and reliable cutting efficiency under repeated industrial use. The flat geometry allows for precise smoothing of flat workpieces, improving accuracy in metal fitting, deburring, and surface correction applications. Commonly used by machinists, mechanics, and metalworkers, this file provides dependable performance in workshop and jobsite environments where controlled yet aggressive metal removal is essential for preparation and finishing work.