Blue Dolphin High-Density Ergonomic Foam Sanding Tools is a line of premium and unique hand-held blocks that are engineered with just the right amount of flex and firmness for project-perfect performance. The Palm Sanding Tool is uniquely shaped to provide just the right control and workability. This tool is a versatile workhorse on walls, siding, trim, molding, and horizontal surfaces such as sills, stairs, flooring, and decking.