Every craft has tools that are particular to it and wool felting is no exception. Often the fibers need to be prepared before being felted into the project, and these Fiber Blenders help you do just that. Also called carders, as in the phrase "carding wool", these wire bristle brushes not only prepare the wool but will also help in blending different colors or even different fibers together. Will also turn leftover wool or acrylic yarn back into felt-able fibers. 2 pc- Package contains 2 carder/wire brushes approximately 5 in. long including handle. Head of brush measures approximately 2 1/2 in. x 1 3/4 in.