The slide rail, USES the high quality slide rail, especially science and beautiful legs, high cost performance, the mini track, allows you to create the icing on the cake, equivalent to a tripod eith an attachment added, let tripod have the function of translation, but keep the stability of the tripod and mobility. Orbit itself with damping, uniform sliding smoothly, the weight is very light, can be used on flat or the uneven ground, also can use double tripod support.