Model: JL8-5 Thickness of drive link: 0.058gauge/0.063gauge (1.5mm/1.6mm) Pitch Length: 0.325inch (teeth rigidity) Electroplate: 58-60(Surface Rigidity HV-1000-1100) (drive link rigidity)Electroplate: 58-60(Surface Rigidity HV-1000-1100) Pull Strength: N/KG >8500N/867kgs Packing way: Each piece or 100feet/reel