Dense sponge rubber for a smooth finish Solid Aluminum back plate Smooth finish for concrete, drywall, stucco, grout, masonry Solid ergonomic handle Lifetime Warranty Edward Tools Rubber Sponge Float is the dense rubber sponge float for concrete, drywall, stucco, grout, and masonry. The fine rubber makes for a smooth professional finish. With a solid aluminum plate back this float is securely centered mounted the handle for precise work. Edward Tools Rubber Sponge Float comes with a lifetime warranty.