● 10mm six-sided chain links made from 3T manganese steel● Patent-pending end link design secures chain to hardened deadbolt eliminating critical vulnerability● Durable weather-resistant nylon sleeve prevents scratches● Store compactly when not in use & fits securely in Waterproof Frame Storage Bag● High security disc-style cylinder is pick and drill resistant● Includes 3 stainless steel keys - one LED lighted key with replaceable battery and 2 new, ergonomic ‘I” keys● Reinforced oval crossbar lock head● Sliding dust cover protects and extends cylinder life● Eligible for Key Safe Program: Register your key number with Kryptonite for easy replacement of lost or worn keys for a minimal fee● Compatible with all Flyer™ eBikesRecommended for use in metropolitan areas or over extended periods of time. Perfect for riders seeking a compact, high security lock that can be easily stored.