More info: https://www.cat.com/en_US/products/ne... | Learn helpful operator tips on the Cat® SMART Grader Blade for D3 series skid steer loaders and compact track loaders. SMART Grader Blades are used for cutting, moving and grading dirt, gravel, sand and virtually any other material used as a base. An assist feature on the blade brings cross slope to Cat D3 skid steer loader and compact track loader platforms.