High-quality Alpha Premium string of European standard (BS) 06B-1 Hardened steel joints (performed biconical sleeves and solid rollers) Shot blasted plates for better resistance to fatigue Pre-lubricated and factory-pre-tensioned delivered chain (at 30-45% of the tensile strength) Minimum tensile strength: 9.0 kN Junction link not included Features and Benefits This chain is designed for use on power transmission systems It complies with British Standard BS 228 Under these conditions, this chain is interchangeable with any other chain produced in accordance with this standard