Smooth exterior for reliable operation The rod surface is round and smooth with no sand holes or black spots. This clean finish reduces snagging and wear, supporting consistent interaction with mating parts and longer service life. Uniform tension and stable rebound Built from raw materials with quality. The tension spring is tight, the texture is clear, force is evenly distributed, and rebound remains stable for repeatable performance in every use. stretchability and lasting durability Features plasticity and good fatigue strength with uniform stress. This makes the rod more firm over time, resistant to fatigue, and from surface defects, delivering refined texture and dependable performance. 23 practical use scenarios Precision assembly guides: use as a springloaded rod where smooth contact surfaces and consistent rebound improve alignment accuracy and repeatable results. Testing and prototyping rigs: benefits from stable force distribution and reliable rebound across many cycles, aiding consistent measurements and iterations. Durable jig components: suitable for fixtures that require fatigue resistance and a clean surface to reduce wear on mating parts.