Ideal for projects involving carving, whittling and creating curved shapes, these #28 replacement blades from X-Acto have an extremely sharp, curved cutting surface for use in a variety of projects. Use these concave blades made from corrosion-resistant carbon steel with a corresponding handle to easily cut through a number of materials, making them a handy addition to your crafting toolkit.Details:#28 concave carving blades4.5" x 2.13" (11.43cm x 5.41cm) package size5 bladesCorrosion and rust resistantCarbon steelFor use with corresponding X-Acto knife handle (sold separately)For whittling, carving and curved shaping