The Walter Surface Technologies Blendex U Turbo Blending Disc was constructed using a heat-resistant non-woven matrix, which helps it to provide a more consistent finish without smearing. The disc is made of self-sharpening grains which provide a uniform finish and allow for high material removal on many different surfaces, according to the company. The Blendex U Turbo was designed specifically to blend fillet welds, as well as deburr sharp edges commonly found in automotive and manufacturing industries.