Support Leg construction allows you to add essential support to bed slat or bed frames, protecting your bed and mattress from sagging and damage. Specification: Material: Iron Color: Black Size: 32 cm(L) x 11 cm(W)/12.6 inch x 4.3 inch Thickness: 4 cm/1.57 inch Package Included: 7.1-13.4 inch adjustable bed legs x 8 long fixing screws X 8 fixing nuts X 8 PVC non-slip pad x 4 Advantage: The bed frame support is made of iron material with a black powder-coated finish, strong and durable / not easy to deform / strong bearing capacity / not easy to rust. The weight-bearing capacity of each leg is up to 250 lbs. The leg bottom is equipped with a PVC pad, which prevents slipping and is not easy to damage or scratch to floors. Adjustable height metal bed frames can match beds of different heights. The adjustable height range 7.1-13.4 inch (18cm-34cm), adjustable maximum width 4.3 inch (11cm) Instruction: If the bed frame has holes, align the double holes with the bracket and tighten the screw with a screwdriver. If the bed frame has no holes, clamp the bed frame with a bracket and auxiliary plate and tighten the screws. Note: To reduce unnecessary hassle, please check the size information before placing an order.