Half Round File, Machinists, American Pattern, Cut Type Bastard, Half Round Shape, Length 6 In, Width 0.64 In, Dia 0.18 In, 29 Teeth per Inch, Steel Material, Taper Slightly Towards Point, Soft Rubber Grip, Ergonomic Handle, Used By Tool and Die Makers, Jewelers, Model Makers, and Home Craftsmen For Smooth, Rapid Work On Cast Iron, Bronze, Lead, Babbitt, Aluminum, Zinc, Plastics, and Any Steel Up To The Hardness Of Commercial Tool Steel