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 to help prevent damage or sagging. The bed frame support legs are made of metal, which is durable and resistant to rust and deformation. High load capacity with individual leg weight capacity up to 250 lbs per leg. The bottom of the legs is equipped with PVC pads that are non-slip and help protect the floor 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 to adjust the distance, and then tighten. If the bed frame has no holes, clamp the bed frame with the legs and auxiliary boards and secure with screws. Color: black Material: metal Package Contents: 2 x adjustable bed legs 4 x screw rods 4 x nuts 2 x mounting plates Only the above package content is included; other products are not included. Note: Light reflection and different displays may cause slight variations in the color of the item in the picture compared to the actual product. Measurement may vary by +/- 1-3 cm.