On Guard Bulldog Mini DT Lock 5015 X2 Power Double Bolt Locking Mechanism locks shackle on both sides M-Cylinder resists all attacks from picking, pulling or drilling Smaller shackle and narrower crossbar save weight. 5 Laser Cut Keys, 1 with a LED micro-light. Included 120cm x 10mm (4 x 0.39) fully coated, braided steel cable provides more locking options Hefty 13mm (0.51) hardened steel shackle resists cutting, prying and jacking