ADJUSTABLE BED SUPPORT LEGS: the height of this bed legs can be adjusted with the swivel base to select the right height to suit uneven floors; the unadjusted original height of 7.08 inch (18 cm), total height longest adjustable up to 13 inch (33 cm); Please check the size information before you buy to make sure the size is exactly what you need BED LEGS ROLE: some mattresses are so heavy that without proper center support, they may cause the bed slats or metal bed frames to bend or break; this bed center support legs adds the necessary support to your bed slats or bed frame, effectively protecting your bed base/ wooden slats/ platform bed frame from sagging and damage; save you money on bed repair and replacement UPGRADED BED LEGS: our bed support legs are designed with a wide and thickened base, and the bottom is also made of excellent rubber pads, which can effectively prevent slipping, reduce noise and protect the floor; IN ADDITION, we have thickened the diameter by approximately 30%, which further enhances the load-bearing capacity STABILIZED DESIGN: we learned that the old model's bed support legs would become wobbly with height adjustments; so this bed leg has a wobble-reducing design that reduces the gap at the joints, which reduces the wobble with adjustment height; bed legs are made of excellent steel; strong and durability support for your bed frame MULTI PURPOSE: this adjustable support legs is not only suitable for bed, but also suitable for cabinet, couch, table, ottoman, chair, TV stand, night stand, love seats, sofa, desk, footlocker, wardrobe, bathroom cabinet, dresser, shelves, coffee table, bookcases or other home DIY furniture; You just need to check the pictures in advance to make sure that the installation method is suitable for your furniture PACKING LIST: adjustable height bed center support legs(7.08 inch-13 inch ) X 4, mounting screws X 16; the adjustable range of our furniture legs is so large that having them is equivalent to having 7/8/9/10/11/12 inch furniture legs at the same time, which is more practical because of the adjustable height; If you encounter any problems in the use, please feel to contact us, we will try our best to solve for you 【Multi Purpose】This adjustable support legs is not only suitable for bed, but also suitable for cabinet, couch, table, ottoman, chair, TV stand, night stand, love seats, sofa, desk, footlocker, wardrobe, bathroom cabinet, dresser, shelves, coffee table, bookcases or other home DIY furniture. You just need to check the pictures in advance to make sure that the installation method is suitable for your furniture.