Alulin accurate profile rails and ball bearing runner blocks are designed especially for all sorts of linear movements and are therefore suitable for use in most type of machinery. The rails consist of wrought aluminium having two pressed-in hardened stainless steel shafts serving as the raceways for the balls of the runner blocks. Advantages are the light weight and corrosive resistant materials. Fixing holes in the attachment surfaces enable machine parts to be directly mounted onto the runner blocks. With this combination it is possible for us to offer a guide system which achieves a good price/performance ratio.