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 is 7.08 inch (18 cm), maximum total height can be adjusted to 12.6 inch (32 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 UPGRADE FEET BASE: the base of our bed legs is upgraded and improved. Compared with normal bed legs, our bed legs have a thicker and wider base for a larger force area; According to the theory of physics, the larger the force area, the smaller the pressure; This means that the weight-bearing capacity of our bed legs will be stronger than that of normal bed legs; And the bottom also uses excellent rubber pads, can effectively anti-slip, reduce noise and protect the floor INSTALLATION METHOD: 1, Have holes to install: align the double holes on the bed legs with the double holes on the bed frame, then tighten the bolts and nuts; 2, Installation without holes: clamp the bed frame or bed slat with the bed leg and mounting auxiliary plate, then tighten the bolts and nuts, the specific effect can refer to the picture METAL MATERIAL: bed legs are made of excellent steel, combined with multi-layer baking paint process, The surface is smooth and delicate, will not rust; In addition, we have thickened the tube wall and feet base of the bed legs; you can mount the bed support legs to the corners of the bed frame, to the sides of the bed frame, to the centre of the bed frame or to the slats; strong and durable support for your bed frame PACKING LIST: adjustable bed legs(7.08 inch-12.6 inch) X 4, bolts(2.36 inch long) X 8, Hexagonal nuts X 8, mounting auxiliary plate X 4; To reduce unnecessary hassle, please check the size information before purchasing