Flint-Hard, 4" felt wheels with tapered (Knife Edge) edges for polishing joints and crevices. Pinhole centers. (Recommended for use with a tapered spindle.) Gesswein felt products are manufactured from carefully selected wool without synthetic fibers or fillers, assuring product reliability. Uniform density throughout means longer life. Gesswein felts give quality finishes every time. Felt wheels may be shaped to accommodate unique curvatures.   Made in USA.