The 3M 7-inch Hook & Loop Back-up Pad is an essential tool for those in the marine and metalworking industries, designed for optimal performance in grinding applications. Crafted from durable rubber, this back-up pad features a medium density rating and is compatible with right angle grinders and random orbital sanders, allowing for versatile use across various projects. With a maximum speed of 6000 OPM and the convenience of a hook and loop abrasive attachment, it ensures quick and easy disc changes, enhancing efficiency during multi-step processing. Whether you require a solid or foam surface for customized sanding and grinding control, this back-up pad meets your needs with precision and reliability.