Easygoing Adjustable Bed Risers-3 Height Option Risers, Furniture Riser Bed Riser and Bed Lifts, Set of 4 Adjustable Bed Risers System Instantly Creates Additional Under Bed Storage. Ideal For Furniture as Well. Incredibly Strong Heavy Duty Construction, Adjustable Bed and Furniture Riser Can Be Customized with 3 Different Heights: Extra 3 Inches, Extra 5 Inches, and an Extra 8 Inches.And has a maximum bedpost diameter of 2.75 inches(approx) They Safely Support a Total of up to 1,200 lbs! Won't Scratch or Dent Hardwood Floors. Bed Riser Set Includes Four Large and Four Small Riser Cups That May Be Used Alone or Stacked. Bed Leg or Caster Fits Safely and Securely Into the Recess Cup Built into the Bed Riser. Great for small bedrooms, dorm rooms or wherever space is at a premium