Of medium coarseness, the second-cut TEKTON 12 in. Flat File is a versatile machinist's file for working with metal, plastic, and wood. Made to remove more material with each stroke, the cross-cut teeth work quickly when you're deburring, rough shaping, and sharpening. Its parallel rectangular profile keeps long edges and flat surfaces straight and true and squares up interior corners. A large, contoured poly handle gives you a comfortable, nonslip grip for controlled speed and pressure with every stroke.