Kryptonite KryptoLok Series 2 Heavy-Duty U Lock with 4ft Flex Cable - Secure ...
KryptoLok Series 2 Heavy-Duty U Lock with 4ft Flex Cable. Introducing the updated 2017 KryptoLok Series 2 Heavy-Duty U Lock - designed specifically to send any bike thief running! Why Choose the KryptoLok Series 2?.