M4 spacers available in four sizes, specifically engineered for 3D printing projects. These sleek, Hollow cylinders provide precise fitting and straightforward assembly, making them ideal for electronics, robotics, or custom constructions. Their clean geometry, smooth surfaces, and uniform wall thickness ensure reliable performance. They can be printed using any material—PLA, PETG, or ABS—with lengths customizable to meet specific requirements. Lightweight, durable, and ready for immediate use after printing, they are an essential addition to every maker’s toolkit.