Enhance the precision of your DIY CNC machines with our specially designed linear guide stop. These shaft collars provide secure shaft fixation and accurate positioning, seamlessly integrating with shafts to deliver a reliable stopping point. Featuring a clamp-on design, they allow for quick and easy installation while ensuring full engagement with the shaft. This promotes stability and alignment in various applications, saving time and improving assembly efficiency. Constructed from high-quality aluminum alloy, each shaft collar in this four-pack has an oxidized finish. Lightweight yet durable, these collars offer consistent performance in demanding environments. The integrated set screw mechanism enables firm clamping without damaging the shaft, preventing slippage and maintaining calibration under operational stress and vibration. Slight color variations may occur due to lighting and display differences, but this does not affect functionality. Color: Silver Material: Aluminum Alloy Type: SBR20 Package Contents: 4 x Linear Rail Stop Collars (other items not included) Note: The color in the image may slightly differ from the actual product due to lighting and screen settings. Measurement may vary by +/- 1-3 cm.