This Knickerbocker Metal Bed Frame is a great buy for many reasons. The low profile design keeps the height of your mattress several inches closer to the floor than traditional metal frames. This makes it easier to get in and out of bed, is great for people with thick mattresses and also makes it better if you spend any time sitting on the bed, not just lying on it. This frame comes with built-in heavy duty headboard brackets so, attaching your headboard is relatively quick and easy. Also, it is adjustable to fit Twin, Full, Queen, King AND California King sizes. The wide wheel design makes it easier to move around and won't damage your floor. Also, they are lockable as well. The center bar adds strength for long-term, dependable support. Knickerbocker is the most trusted name in metal bed frames - has been for years!