These are Linear guide manufactured by WMH Herion which are used for certain industrial application. These linear guides are comprised with two series which are HG, EG and MGN/MGW. The HS series suits to certain operations such as grinding, milling, drilling machine and lathe machine center. For the EG series, it is designed for automatic equipment, high speed transfer device, semiconductor equipment, wood cutting machine and precision measure equipment. For MGN/MGW, it is designed for miniature device, semiconductor equipment and medical equipment. They come with different classes such as C, H, P, SP and UP. The user can have an option of choosing the right class for a specific application. With these classes, the user can immediately determine the size and number of blocks needed in an operation.