The Bed Lifters are leg extenders designed for use by individuals with arthritis, back pain, or mobility or lower extremity disabilities. These hardwood blocks lift a bed up off the floor, making it easier to get in and out of bed. These extenders can be used with square or round bed posts, casters up to 2.75 inches in diameter, and trundle beds. When stacked, these blocks fit together securely; steel rods (included) add additional stability. DIMENSIONS (HxWxL): Each block is 3.5 x 4.5 x 4.5 inches. One set lifts a bed from 2.75 to 3.5 inches; two sets combined provide 7 inches of lift. COLOR: Mahogany or honey oak finishes.