COMI Ribbon Sludge Pottery Scraper + Feather Wire Texture Tool for Clay Sculpture Modelling (Model 1) Material: Aluminum Length: about 11cm Works well on various modeling materials including clay, greenware, wax, and other materials Excellent for sludge,pottery clay scraping, embossing, sculpting,modelling,smoothing. An ideal tool for clay, art projects, sculpture and other craft projects.