Furniture risers let you change the height of your seating so you can rest and rise with ease. (Adding height also increases storage space!) Simply place these sturdy blocks beneath table, chair, sofa, bed, or workbench - raising them 3" or 5" to make life a little easier. They also raise tables for wheelchair users. Heavy-duty plastic supports up to 1400 lb. Set of four. 6 1/2"dia. at base.