Simonds 73402500 12in Round File tool storage

Simonds 12in Round Machinists File

The Simonds 73402500 is a 12-inch American-pattern round file with a bastard-cut double-cut profile. It is made for machinists and metalworkers who need to enlarge holes or shape curved internal surfaces in aluminum, brass, bronze, steel, or tin. The rigid body tapers toward the point for controlled material removal in tight radii.

Natural-finish steel with four cutting edges

The file body carries a natural finish and measures one-half inch in thickness and width, with 18 teeth per inch across four cutting edges. Double-cut faces and edges give aggressive stock removal while the rigid construction resists flex during heavy hand pressure. It ships in a box without an insulated handle, so users fit their own grip or use it bare.

Replaces worn or finer-cut round files

This tool upgrades from smooth-cut or second-cut round files when faster material removal on non-ferrous and ferrous metals is the priority. The jump is worth it when hole enlargement or internal deburring demands a coarse, rigid bastard cut that holds geometry longer. Buyers needing fine finish passes or insulated handles should look elsewhere.