Kryptonite Kryptolok Mini-7 bicycle lock comes with a flex cable and introduces many improvements that make it more secure than locks from other brands. It is recommended for medium-high theft hazard areas, with a security rating of 6/10. Every manufacturer gives their locks a number – that's why this lock is more secure than other brands with a higher number. It has been awarded the Sold Secure seal (Silver level) by a more independent organization. The flex cable allows you to secure the front wheel of your bicycle for an extra security function.