Description Features: 7mm four-sided chain links made from3T MANGANESE STEEL Patent-pendingEND LINK DESIGNsecures chain to hardened deadbolt eliminating critical vulnerability HardenedDEADBOLT DEDSIGNprovides extra holding power HIGH SECURITY DISC-STYLE CYLINDERis pick and drill resistant Includes2 NEW ERGONOMIC ‘I’ KEYS DurableWEATHER-RESISTANTnylon sleeve prevents scratches Key Safe Program Product dimensions: 33.5 (85cm) chain length Product weight: 3.50 lbs (1.59 kgs) Security Rating: 5/10