Height Adjustable Bed Support Legs: The height of these bed frame support legs is adjustable with the swivel base to choose the right height to fit uneven floors. The shortest is 8.3 inches, the longest is adjustable to 14.5 inches. We also another size: (adjustable height from 8.3 inches to 14.5 inches). (Please CHECK the required length before purchasing and make sure the size is exactly what you need . Upgrade: Stronger load-bearing and more stable compared to other brands' bed legs, A. Our support base adopts widened design with 30% wider and more stable base than other brands. B. Our bolt to adjust the height of our support legs adopts full leg gear design, which is 3.5 times thicker than other brands' gears and has stronger load-bearing capacity .Widely Use: These adjustable bed support legs are not only suitable for king/queen/platform beds, metal bed frames, bed beams and wooden slatted beds, but also function as adjustable height furniture legs for tables, sofas, armchairs, dining rooms, TV cabinets, dressers, chairs, nightstands, vanities, cabinets, wardrobes and other furniture .Material: The bed frame support legs are Made of Hard Rigid Plastic and Surface Treated. Furniture support legs feet are lighter, waterproof, rustproof, wear-resistant. Thickened material, sturdy support. Furniture legs will not damage or scratch your beautiful floor while reducing noise .Installation: This Bed Frame Support Legs Kit parts include 4 adjustable bed support legs, 48 bolts. Lock the support legs under the bed seat with screws, rotate the base of the bed support legs, adjust to the appropriate height, and tighten the fixing nuts to prevent shaking