All of them have 1/4 inch hex shank, enough for your need in common wire brush applications. Efficient cleaning: The Stainless Steel Cleaning Brush for Power Drill Impact Driver is a powerful cleaning tool that can quickly remove dirt, grime, and rust from various surfaces, including metal, concrete, and wood. Durable: Made from high-quality stainless steel, this cleaning brush is built to last and can withstand heavy-duty use without breaking or bending. Easy to use: The brush attaches easily to any power drill or impact driver, making cleaning fast and effortless. It's perfect for cleaning hard-to-reach areas, such as corners and crevices. Versatile: The cleaning brush is suitable for a wide range of applications, such as cleaning car rims, removing paint from metal surfaces, and cleaning grout lines on tile floors. Safe: The stainless steel bristles are safe to use on most surfaces without causing damage or scratching. Additionally, the brush is designed with safety in mind, with the bristles securely attached to the head to prevent them from flying off during use.