Description: Against saw:Hardened steel shackle can not be cut by saw. Avoid to be prized:The device contains very hard Arsteel ball to pin the shackle and it is so strong that it can not be prized by force. Against drill:Hardened lock shaft cover can be against drill. Against versatile key:The internal construction of the lock has innovated and modified from the usual ball to the special multiple layers one, so the versatile key can not turn on the lock in any way. Specifications: Brand new motorcycle disc brake lock High quality aluminum alloy Protect your bike from theft The lock cylinder hole disc diameter 0.6CM, small customers do not shoot, make sure the lock pin is suitable for pumping depth and diameter of your disk before buying.