9 mm Linear Guide MGN9 is available in the following lengths: 100, 200, 300, 350, 400, 450, 500, and 600 mm. MGN9H option: 400 mm length with a block included. The 400 mm version with a block is the MGN9H type. The 9 mm Linear Guide MGN9 offers multiple length choices to fit different applications, enabling compact, space-efficient linear motion. MGN9H 400 mm with block provides a ready-to-install solution for needs that require a carriage and guide in one package. Key benefits - Compact 9 mm profile for tight spaces without sacrificing performance - Flexible length options to match different axes and travel requirements - Compatibility with standard MGN9 rail and block configurations - Ready-to-use option: the MGN9H 400 mm includes a block for quick installation Use scenarios - Small CNC machines or milling axes where space is limited and precise linear movement is needed - 3D printers for compact X or Y axis assemblies requiring reliable motion - Automated assembly lines or inspection rigs where a compact, ready-to-install carriage and rail set is advantageous