Our Aluminum Master Support Laps are designed to provide a stable and reliable surface for other laps to work on. With a ground flat and parallel surface, these master lapsoffer a consistent and accurate base for diamond flat laps and discs to operate on.Made from a combination of aluminum and plastic materials, our master laps are lightweight and easy to handle. They are 1/4 inch thick and are not charged with abrasive, making them ideal for use as a backing plate.Our standard sized backing is available to support both 6 and 8 inch standard discs, while larger sizes ranging from 10 inches to 24 inches in diameter are also available. This wide range of sizes ensures that our Aluminum Master Support Laps can be used in a variety of lapidary applications.Whether you're a professional lapidary or a hobbyist, our Aluminum Master Support Laps offer a reliable and consistent base for your diamond flat laps and discs. With their ground flat and parallel surface, lightweight design, and a range of sizes available, these master laps are an essential tool for any lapidary workshop.Choose from a range of diameters