The Pro-Graad 3" Aluminum Insertable Double-Buff Safety Flanges are designed for high-speed polishing applications, specifically tailored for MOUNTING TWO 3" center airway buffing wheels without center plates. Constructed from precision-machined, high-grade aluminum, these flanges offer superior durability and strength compared to plastic or lower-quality metal alternatives. This makes them ideal for withstanding the rigors of extended use in metal polishing tasks. One of the key advantages of these flanges is their ability to run two airway buffing wheels simultaneously, without requiring an arbor extension. This dual-wheel setup allows users to cover a larger surface area in less time, improving efficiency during both the cutting and coloring stages of the polishing process. By mounting two buffing wheels at once, you can significantly reduce the time and effort needed to achieve optimal results on your metal polishing projects. The self-tightening design of the Pro-Graad flanges further enhances their convenience. No additional fastening nuts or tools are needed; simply place the flanges onto your 5/8"-11 threaded tool, and they will automatically lock the buffing wheels securely in place. This streamlined setup saves time and simplifies your workflow, allowing for quick adjustments and smoother operations. Measuring approximately 4-1/4" in diameter and featuring a 3/4" recess, these safety flanges ensure a secure, precise fit on your grinder or polishing tool. The recessed design is optimized for running two airway buffs without center plates, ensuring correct rotation and effective performance. The Pro-Graad 3" Aluminum Double-Buff Safety Flanges offer a durable, high-performance solution for anyone looking to improve efficiency and effectiveness in metal polishing, all while providing a secure and simple setup process.