The Zenport AGF139 8 in. Diamond-Coated 180 Grit Half-Round File is a versatile machinist’s file for working with metal, plastic, and wood. The Diamond-Coated round side puts a smooth finish on interior contours and holes. Flip it over to the flat side, and the Diamond-Coated surface will quickly remove material with each stroke when you’re deburring, rough-shaping, and sharpening. A large, contoured orange poly handle gives you a comfortable, nonslip grip for controlled speed and pressure with every stroke.