Each foot is placed under the castors or legs of the chair or bed, raising the height 3.5 inch (9 cm) The wide top is 3.5 inch (9cm) in size and holds a flip resistant insert with a central recess. Metric: 160 x 160 x 100mm Imperial: 6.3 x 6.3 x 3.9 inch Pack of 4 Black Max. Weight Limit: 380kg / 60 stone / 840lbs
