Our specially designed linear guide stop enhances the precision of DIY CNC machines. These shaft collars secure shaft fixing and accurate positioning, seamlessly integrating with shafts to provide a reliable stopping point. Made from quality aluminum alloy, this fourpack set delivers a balance of light weight and strength. Each shaft collar features a protective finish that supports oxidation resistance, helping performance remain consistent in demanding environments. Key benefits Improves precision and repeatability by providing a clearly defined stopping point on the shaft. Quick, clampon installation that fully engages the shaft for immediate stability and alignment, reducing setup time. Lightweight yet robust construction offers reliable performance across a range of mechanical applications. Fourpiece set provides a convenient supply for multiple axes or spare parts. What it includes Four shaft collars designed to clamp onto standard shaft sizes used in common DIY CNC, 3D printing, and linear motion assemblies. Compatibility and specs Designed to fit standard shafts found in hobbyist and light industrial projects. Easy to integrate with existing linear guides and axis systems. Made from aluminum alloy for a good combination of strength and lightness, with a finish intended to resist oxidation. Installation and use Clampon design engages fully with the shaft, delivering stable positioning and accurate alignment without the need for additional machining. Suitable for use as end stops or reference points in various mechanical setups where a repeatable shaft stop is required. Use scenarios End stop on CNC machine axes (X, Y, or Z) to define repeatable zero or home positions. Reference locator point in linear guide systems for 3D printers or gantry assemblies. Shaft stopping point in automated or vibrationprone equipment to minimize drift and maintain alignment. Notes Maintains a professional, straightforward design that supports reliable performance without unnecessary complexity. Ideal for projects requiring a dependable, easytoinstall shaft stop across multiple axes.