... 555×120 mmCar Parking LockUser ManualCheck the accessories:1 Parking lock 1set2 Bolt 3pcs3 Instruction 1pc4 Key 3pcsSpecification:1. Model No ... 4) by bolts, fixed the base(3) on the ground. 2.used the key(the concave at the top position )into ... the keyhole(7), turn right a little, the lock has been opened.3.push down the block circle (1 ... the parking position, so it is locked. Car Parking Lock