Reversible scraper blades are made from tungsten carbide, they can last 20 times longer working hours than conventional High Speed Steel scraper. Two edges or even more edges are available, make one piece scraper blade can work 2 or more times, which is longer than the scraper that has only 1 edge. Replacement carbide scraper blade is a kind of blade which has four edged tungsten carbide reversible inserts. You can use our scraper to deal with different degrees corner, especially those hard-to-reach area. With smart design for this tool, the carbide scraper is good at removing putties of window, chimney, stove, etc. Besides, what we have is not just blades, we also provide handles. Two types of handles make you can insatall both rectangular inserts or other types inserts.