[Portability and Safety] Suitable for all bicycles and E-Bikes. Key to Unlock and lock in one second, without the trouble of Bike U-lock bracket fixation, without the trouble of turning the combination bike lock dials in the dark. Allows you to start and end your ride easily. With a dust cover cylinder protection and chain sleeve protection, the SUNYA bike chain lock can be placed on the ground at will. It is lightweight and portable, and easy to use even by children and teenagers.

[Safety Level over 6] The entire chain is composed of 6mm diameter alloy steel rings. It includes 6pins brass lock cylinder, high-strength engineering plastic die-cast lock head, and brass key with tracking code. All this greatly prolongs the difficulty and time of stealing bicycles.

[Anti-theft performance] The 6pins lock cylinder makes thieves need more steps & times to perform technical unlock or even unable to unlock. The brass lock cylinder is installed in the zinc alloy die-cast lock body and wrapped by engineering class plastic lock body, which is difficult to be cracked by blunt force. Each chain lock has been heat treated and hardened, and all pass standard salt spray and pull tests.

[Various Uses] The flexibility of the chain allows it to be used to lock bicycles and other objects. The chain wrapped in a nylon cloth sleeve is so flexible that it can wrap around anything you want to lock, such as doors, outdoor refrigerator, equipment boxes, camping carts, motorcycles, mopeds, scooters, shop gate etc.

[Quality Warranty] If the lock cannot be unlocked with key, mechanical failure, broken chain, rusted key, etc., we will replace it for you free of charge. Besides, all the SUNYA bike locks come with single time free rekey service if you can offer the key code which print on the key surface.

Designed in Germany