The set of 4 risers (4 large and 4 small = 8 pieces in total), ranging from 3 to 8 inches in height, adds a new level of comfort to your life. The risers are 2.8 inches wide and 0.7 inches deep, providing a solid base for the furniture legs. The super strong bed and furniture riser can be modified with three height options – up to 3 inches, 5 inches, and 8 inches (when combined) and has the largest bed post distance. The bed risers can be stacked together when not in use to save space. The bed leg fits securely into the recess cup and can be easily used on any bed; Features a 1.8cm depth to keep the post securely in place Made of sturdy plastic, which can support the weight of the heaviest furniture in your home or office, they can safely support a total of up to 600kg (when the bed risers are used together), but make sure you only use them if a proper fit is delivered Note: The risers are not suitable for recliners; please also ensure that the furniture legs are no thicker than 7cm