Features:- 5Mm four sided chain links made from hardened carbon steel- Hardened locking pin provides additional holding power- Wafer style cylinder offers RESISTANCE FROM PICKING AND DRILLING- Durable WEATHER-RESISTANT nylon sleeve prevents scratches- Includes 2 NEW ergonomic keys- Key Safe ProgramSpecifications:- Product dimensions: 33.5 (85cm) chain length- Product weight: 1.61 lbs (0.73 kgs)