1. Open the buckle: Stretch both ends of the buckle outward to make the buckle form a figure eight.
2. Pass through the wire rope or chain: Pass one end of the buckle through the end of the wire rope or chain, and adjust the buckle to the appropriate position.
3. Fix the buckle: Use pliers, wrenches and other tools to fix the two ends of the buckle to the ends of the wire rope or chain to ensure that the buckle will not slide.