This product is a patented metal buckle under the CLIPON AK501 series. It adopts a streamlined exterior configuration characterized by a compact structural composition and a concise industrial aesthetic. From a technical standpoint, the buckle innovatively utilizes high-strength POM engineering plastic as the elastic component, thereby replacing the conventional metal spring mechanism. This structural enhancement effectively mitigates metal fatigue while significantly improving durability and service life. Performance evaluations indicate that the product is capable of withstanding more than 10,000 opening–closing cycles without structural failure, demonstrating superior operational stability and safety. The buckle is applicable to high-end pet harnesses, outdoor equipment, and various functional strap systems, integrating practical functionality with aesthetic design.