Portable in size and weight, convenient to install and use, do not take too much space. High-end color don not fading after long time use, adaptable for different sizes tank. Stainless steel tube, not easy to deform, more rows parallel support large bearing capacity. The ends of tube is covered by lastics, high qaulity material, toxic-free and middle-hardness, can be folded to storage. The interval of tubes are middle-size, can stably prop up different sizes things without easily fall off and do not storage liquid.