Screw protection cover, also known as spiral strip to protect the cover, screw protective cover. This product is in China and Italy developed a novel machine tool components for CNC machine tools, processing centers, and other precision machine tool hydraulic each shaft, bar class and ball screw protection. It not only has features such as dust, anti-chip, anti-coolant, but also to maintain the normal precision of machine tools, and extend machine life, and increase the aesthetic. This product uses the high quality spring steel strip made of heat-treated, stable work, flexibility, and low noise, the surface was shiny black, together with most of the flange on the machine. Screw protection cover, also known as spiral strip to protect the screw guard. This product on the basis of the original development of the stainless steel spiral strip protective sleeve, protective sleeve more beautiful appearance than the original carbon steel screw, flexible more close up the gap.