Simplify 2998 Adjustable Bed Raiser Set, 8-Inch Practical, Durableand Adjustable Riser set includes four large and four small riser cups that may be used alone or stacked for maximum 8-inch height Each riser has a built-in recessed cup to hold bed legs or casters securely Great for small bedrooms, dorm rooms or wherever space is at a premium Raise your storage options to new heights