For attachment to m14 thread rotary machine polishersDurable and long-lasting performancePolishing between flat and contoured surfaces is made easy5 pads per packThe simple hook and loop system of this back-up pad makes the attachment of compounding and polishing pads quick and easy. A nylon plate is bonded to a thick layer of foam that provides excellent impact resistance and durability no matter the job. The unique characteristics of this product also give it a high level of flexibility, which means that even moving between flat and contoured surfaces is simple and quick