Both professionals and hobbiest, rejoice! The Excel Blades’ Excel Blades is set to become your next favorite tool! This precision tracing wheel set features a perforation wheel in three different sizes,can be used with clay, paper, leather, fabric and more, and is designed for perforating, dotting, imprinting, tracing, quilting, embossing, overstitching and more! The item # 30612 is made of aluminum.