For scraping on wood, metal and concrete The cemented-carbide blade stays sharp and productive up to 50 times longer than a conventional steel blade The blades are precision-ground to a slightly convex shape that prevents the blade corners from scratching the work surface 442: double edged 50 mm for scrapers 650 and 440 451: double edged 65 mm for scrapers 665 and 450 449: triangular 25 mm for scrapers 625 and 448
