1.The drill wire wheel is designed to quickly connect with an electric drill or other tools, making it easy to replace and install. The wire wheels are tightly arranged, capable of withstanding high-speed operation at 4500 revolutions per minute, with a maximum speed of 20000 RPM 2.Specification:5/8-11 UNC standard threaded arbor, The wire wheel brush can be used directly on wire wheels for a 4 1/2 angle grinder and other grinders with 5/8' threaded arbors. 3.Efficient and : The wire wheels can rotate and work at high speed, RPM 12,500. High-quality carbon steel is hard and wear-resistant, has good heat dissipation performance, and is not easily fused 4.High-Quality Materials: The wire wheel brush and cup brush are made of high-quality carbon. The red top cap is hard and thick, with a strong grip, and not easy to fall off