The Kryptonite 712 Keeper Key 4 ft x 7 mm Chain Lock - Black is designed for flexible lock-ups around bike racks, posts, and irregular anchor points, combining 7mm four-sided chain links made from 3t manganese steel with patent-pending end link design secures chain to hardened deadbolt eliminating critical vulnerability.

Its technical details include construction based on 3t hardened manganese steel, a listed size of 4 ft x 7 mm, keyed operation, helping you match the lock to the way you carry, store, and secure your bike or gear.

Key Features

• Construction: 7mm four-sided chain links made from 3t manganese steel
• Construction: Patent-pending end link design secures chain to hardened deadbolt eliminating critical vulnerability
• Locking System: Hardened deadbolt design provides extra holding power
• Locking System: High security disc-style cylinder is pick and drill resistant
• Protection: Durable weather-resistant nylon sleeve prevents scratches

Benefits

• Flexible chain format makes it easier to wrap around varied racks and posts.
• Dedicated lock mechanism supports a secure connection at the chain end.
• Protective covering helps reduce frame and paint contact marks.

Best For

• bike racks, posts, and larger fixed objects
• riders who prefer flexible chain routing

Specifications

• Brand: Kryptonite
• Model: 712 Keeper Key 4 ft x 7 mm Chain Lock
• Product Type: Chain Lock
• Material: 3t hardened manganese steel
• Size: 4 ft x 7 mm
• Color: Black
• Manufacturer Part Number: 1706
• UPC: 720018001706
• VeloFred SKU: BI.390168