Adjustable from 4.7 inches to 8.67 inches (12 cm to 22 cm). The bed frame center support legs are designed to accommodate different bed heights, helping to prevent damage or sagging. Made of metal, the support legs are corrosion-resistant and will not rust or deform. Each leg has a high load capacity of up to 250 lbs. The bottom of the legs features PVC pads that are non-slip and help protect flooring from damage. Easy to install with T-shaped feet; no drilling required. When the bed frame has holes, use the bracket to align the double holes, insert the screws, adjust the distance, and tighten. If the bed frame has no holes, secure the legs using auxiliary boards and tighten the screws. Color: black. Material: metal. Package includes: 2 adjustable bed legs, 4 screw rods, 4 nuts, 2 mounting plates. Only the listed items are included; other products are not included. Note: Lighting and display differences may cause slight variations in color. Measurement error is +/- 1-3 cm.