Circular telescopic protective cover, also known as screw protector or screw dust cover.
The screw guide bushes are designed for the protection of screws, shafts, pillars, spindles, and other cylindrical rotating structures. These guides can be installed horizontally or vertically. For horizontal usage, it is recommended to use plastic or aluminum support rings to maintain a uniform distance between the cover and the screw, thereby extending the product's lifespan. When the extension length of the guide is significant, a metal ring can be added at each fold to enhance the stability of the cover. The connection or fixed end is typically equipped with a metal flange disk, or a sleeve clamp option can also be chosen.
