Mudtools stainless steel extra long scraper rib is simply a larger version of MT-SSL Rib. You can use the XL scraper aggressively on larger clay surfaces. Made with cutlery grade stainless steel, smooth, 12 teeth, 18 teeth, & 24 teeth per inch. the smooth edge works well for throwing and finishing while the toothy, serrated options are fantastic for scoring, scraping and plaining the clay. 153mm Long x 35mm Widest point.