12-inch blue steel pool trowel has the most flexible blade of all 12-inch pool trowels. This trowel has a 4-3/8-inch aluminum mount attached to a 12 x 3-1/2 blue steel blade. 12-inch Blue Steel Pool Trowel has rounded edges, measures 12 inches long by 3-1/2 inches wide, and a wooden curved camelback handle.