Fourpiece shaft collar set constructed from quality aluminum alloy. Lightweight yet robust, delivering reliable performance in demanding environments. Specially designed linear guide stop included to enhance the performance of your DIY CNC machines. The shaft collars secure shaft fixing and enable accurate positioning, seamlessly integrating with shafts to provide a reliable stopping point. Quick and easy clampon installation. The collars engage fully with the shaft for stable alignment, reducing setup time and improving overall efficiency in a variety of mechanical applications. Compatibility and sizing. Designed to fit standard shaft diameters used in DIY CNC, robotics, and general mechanical systems. Material: aluminum alloy. Function: clampon shaft collar with an integrated linear guide stop for precise stopping points. Use scenarios On a DIY CNC router or milling setup, position a repeatable stop for a linear guide or axis to improve accuracy and repeatability. In a 3D printer or hobby robotics project, secure and locate shafts to maintain precise motion control and alignment. In small automation or beltdriven assemblies, secure shafts and provide reliable stopping points to maintain consistent performance.