CAUTION: Ensure proper compatibility by checking your angle grinder guard. For 4-1/2" wheels, use grinders equipped with 5" guards or larger. Likewise, for 6" wheels, utilize grinders with 7" guards or larger. Incorrect guard size may result in inadequate fit and compromise safety. Note that aftermarket guards are widely available for purchase if a replacement is needed. Premium Quality Construction: Harri Abrasives Twist-Knotted Stainless Steel Wire Wheel Brush is crafted with high-quality stainless-steel wire that pairs best with aluminum, brass, copper, and stainless steel, ensuring durability and longevity in heavy-duty applications. Designed for optimal performance, this wire wheel brush will work efficiently cleaning and deburring, and preparing and finishing stainless steel weld beads. " - Arbor hole: 7/8" - Wire Material: Stainless Steel - Wire Diameter: 0.02 inches - Wire Knot Diameter: ½ inch. Available in two diameters: 4.5" and 6" for versatile applications. Larger package quantities are available for a more cost-effective solution. Harri Abrasives Quality Assurance sets the standard for excellence in abrasive tools, and this Twist Knotted Wheel Brush proudly upholds this commitment to quality. When you choose a product bearing the Harri Abrasives name, you're choosing a tool crafted with precision and backed by a legacy of reliability.