IIT 29100 5-Pc. Mini Diamond File Set Smooths Shapes Files Ceramic Marble Plastics Metals, Ideal for small, intricate work. Tips include: 1-Flat, 1-half round, 1-square, 1-triangular, & 1-round. Great for sharp edges, reshaping, and reaming drilled holes. Cushioned grip for a firm, comfortable hold. The files cut on both the push and pull strokes on each side.