The Structure of metal bed frame is more sturdy than others. High quality bed slats guarantee stability and durability,supporting the mattress and prevent it from moving or sinking for long-lasting service life.Three Holes is special design for your demand. We are devoted to making a suitable bed frame no noise no shaking and provide a good sleep for you, enjoying your time on our bed frame is our pursuit always. Detail Installation:Tighten the screws to 80% during the primary installation.When the outer structure is finished, you can tighten all the screws.Tools included &2 people required.