On of the best bicycle locks on planet earth! Features 10 mm six-sided chain links made from 3t manganese steel Patent-pending end link design secures chain to hardened deadbolt eliminating critical vulnerability High security disc-style cylinder is pick and drill resistant Patented*, reinforced oval crossbar lock head Sliding dustcover protects and extends cylinder life 3 stainless steel keys – one LED lighted key with replaceable battery and 2 new, ergonomic ‘I” keys Durable weather-resistant nylon sleeve prevents scratches Key Safe Program Material 3f manganese steel Weatherproof nylon cover Safety Level 8/10 Length / Diameter 90cm x 10mm Weight 2.77 kg Contents 1 x Evolution Series 4 Integrated Chain 1090 3 x keys, one of them with integrated key light We reserve the right to make changes to the product information contained on this site at any time without notice, including with respect to equipment, specifications, models, colours, materials and pricing. Due to supply chain issues, compatible parts may be substituted at any time without notice.