The Yellow-Extra high performance wheels will handle virtually any grinding or cutting job. Grinding welds, finishing surfaces, and cutting out auto body panels are perfect applications for these premium grinding discs and cut-off wheels. Flap discs have become commonplace in many, many production facilities and in the job shop as well. KLINGSPOR was one of the innovators of the flap disc design and continues to be at the forefront of the development. These Power Wheels will replace your wire wheels for removing surface contaminants while leaving a fine finish. Available in 4" and 6".