Check the listing for details. Bed Risers, Square Heavy Duty Stackable Lift Block to 1 Inch, Black. Condition: New. Listed at 19.41 USD. Description:PP Material: Constructed from durable PP (polypropylene) material, these risers offer reliable strength and stability. The material is resistant to wear, moisture, and deformation, ensuring long-lasting performance even under heavy loads.L-Shaped Edge & Anti-Slip Texture: The L-shaped edge and square design allow the furniture lifter to fit snugly on most furniture and appliance legs, with an anti-slip texture to enhance grip and prevent shifting. The simple yet effective design distributes weight evenly, reducing pressure on furniture legs and floors while increasing height.Stackable Height:Lifters can be stacked to adjust height. A one-tier lifter raises the leg 1 inch; a two-tier lifter raises the leg approximately 2.8 inches, and so forth..