Height adjustable:5.9in(Adjusts from 5.9'' to 8.6''), 7.8in(Adjusts from 7.8'' to 10.6''),9.8in(Adjusts from 9.8'' to 12.6''). It is suitable for most of the bed frames. It can protect your bed and mattress from damage or sagging. Versatility: The support leg is suitable for most of the bed frames, bed center slat,Sofa Furniture Cabine and other furniture.It can protect your bed,Sofa Furniture Cabine, and mattress from damage or sagging. Easy to install: T-shaped feet, no punching, easy to install. lf the bed frame has holes,align the double holes with the bracket and tighten the screw. If the bed frame has no holes, clamp the bed frame with bracket and auxiliary plate and tighten the screws. Hardware included: 2pcs Adjustable Bed Furniture Leg, 4 pcs 2.3''screw,2 pcs auxiliary plate. The Bed Slat Support Leg is made of high quality steel, anti-corrosive and will not rust, we have thickened the pipe wall to make it more load-bearing. Leg bottom PVC pad are non-slip and wear resistant. The diameter of the adjusting screw at the bottom of our bed leg is 12mm, which is 20 percent thicker than other brands, so it is more stable.Leg bottom PVC pad are non-slip and wear resistant.