Benchmark Abrasives 4-1/2" X 1/8" X 5/8"-11 T27 Pipeline Wheels are designed for heavy-duty grinding and finishing applications. This 10-pack of pipeline wheels features a durable aluminum oxide abrasive grain that delivers consistent performance and long life. With a 4-1/2" diameter, 1/8" thickness, and 5/8"-11 threaded arbor hole, these wheels are suitable for use on die grinders, angle grinders, and other portable grinding tools. The T27 grain type offers an aggressive cutting action, making it ideal for removing rust, burrs, and other surface imperfections from metal surfaces. Whether you're working on pipelines, structural steel, or fabricated parts, these pipeline wheels provide reliable grinding power and efficiency.