Bear-Tex Rapid Prep AO fine grit non-woven portable in-line belts are an excellent choice for fine grit final surface blending on a variety of metals and shapes. Coated with a premium aluminum oxide abrasive grain, these belts cut up to 20-percent faster than other surface-conditioning belts. They're backed with Y-weight polyester bonded with a durable, nylon fiber, making them a perfect choice when minimizing stretching and maximizing durability is necessary. Open-coated and engineered with proprietary Clean-Bond resin technology, these belts minimize loading when working aluminum and other soft metals and deliver smear-free finishes, even on high-nickel-content alloys.