13mm square shackle,resist 20T hydraulic shear.

 The shackle and the structural parts of the locking mechanism are made from special hardened steel,covered with soft silica gel,prevent damage to paintwork.

 With anti-drilling cap and manually operated keyhole cover.

Automatic homing locking mechanism,easy to lock.

Advanced lock cylinder technology with the key of only 0.3-0.6mm thickness, has high protection against manipulation.