Drive in: It can be inserted into and through-the-shelf shelves are the most common shelving system used for stacking oversized and similar items of palletized material. First in first out or storage is made according to the first-in, last-out method. As no corridor is left between the blocks, the stacker uses the loading channels as a corridor. This system uses rails instead of traverses. It is the most important feature that the system is robust and economical, it has montage and demount characteristics, the shelf intervals are adjustable, maximum load bearing and maximum storage areas are compared with other systems.