The Pearl Abrasive Knot Wire Wheel is designed for professional use with a 4-inch brush diameter and a 0.020-inch wire diameter made of tempered steel. This wire wheel features a regular twist knot design for efficient abrasive performance. The arbor hole mounting type ensures easy installation on drills or grinders for a seamless operation, making it a reliable tool for various sanding and grinding tasks. Part #CLWBK410T