28953 Features: -Cup brush.-Material: carbon steel.-Ideal for metal, non-ferrous and precious metals, casting, plastic, semi-precious stone, stone and wood for deburring, polishing, rust removal, matting, paint, lacquer and cleaning electrical components.-Flexibility of the wire makes the brush very conformable.-Shank size: 0.93". Dimensions: -Overall dimensions: 0.39" H x 3.54" W x 1.77" D, 0.5 lbs.