Ryehaliligear Easygoing 4-Pack 3 Inch Height Bed Risers, 3inch, Black Nullify Bed Risers System Instantly Creates Additional Height of 3 inches(approx)Under Bed Storage, And has a maximum bedpost diameter of 2.75 inches(approx).These Bed Risers are not Adjustable. Bed risers may be stacked together when not in use. Prior to making purchase decision to determine whether this bed risers size is suitable for you. Bed Leg or Caster fits safely and securely into the recess cup built into the bed riser, May be conveniently used on virtually any type of bed; features a 0.75-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 5720 lbs Either head or foot of bed can be raised for medical conditions. The bed lifters is excelent for a platform bed