Our colored interchangeable struts are an easy way to customize your HEATKILLER® Tube Series reservoir. The struts are made of solid aluminum. The colored versions have a high end anodically oxidized finish. Delivery includes four struts. One of them is designed to hold a LED strip. Corresponding LED strips are available separately.Please be careful to choose the correct strut length for your tube. This set is compatible with any 150mm HEATKILLER® Tube.