Usage Tips:Enhance the precision of your DIY CNC machines with our specially designed SBR linear guide stop. These shaft collars ensure secure shaft fixing and accurate positioning, seamlessly integrating with shafts to provide a reliable stopping point. Quick and effortless installation, our clamp-on shaft collar design is engineered to engage fully with the shaft. This ensures stability and alignment in applications, saving time and enhancing the efficiency of assembly in various mechanical setups. Constructed from superior quality aluminum alloy, each shaft collar in this four-pack set features an oxidation and corrosion-resistant finish. Light yet robust, these collars guarantee longevity and consistent performance in demanding environments. Our innovative set screw mechanism allows for firm clamping without compromising shaft integrity. This precision approach prevents damage and slipping, ensuring that your setups maintain their calibration under operational stresses and vibrations. The actual product may have slight color differences or differences, which does not affect use. Colour:Silver Material:Aluminum alloy type:SBR20/SBR16 Package Contents: 4 x Linear Rail Stop Collars Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.