Bed Risers 8 inch Heavy Duty, 3 Height Option Furniture Risers, Bed Riser and Bed Lifts, Black, Set of 4 Adjustable Bed Risers System Instantly Creates Additional Under Bed Storage Super strong adjustable bed riser can be customized with 3 height options: 3 inches, 5 inches, and 8 inches, and has a maximum bedpost diameter of 2.75 inches(approx). Bed Leg or Caster fits safely and securely into the recess cup built into the bed risers, May be conveniently used on virtually any type of bed; features a 1-inch raised edge to keep bedpost or caster securely in place Made of heavy-duty unbreakable plastic; can carry even the heaviest furniture in your home. They safely support a total of up to 1,200 lbs Furniture risers may be stacked together when not in use to conserve space