Installation instructions

Step 1: Remove the bicycle lock from the shell of the bicycle lock. Step Place the shell on the seat tube facing the rear fender; Place the housing opening upwards. Step 3 Use the tools provided to fix the housing on the mounting point. Tighten all screws to ensure that the housing does not click when riding. Step 4 Insert the lock into the housing and secure it with a rubber strap attached to the top of the housing

The bicycle chain lock body is made of aluminum alloy, which is cylindrical, with a diameter of about 25 mm and a length of about 5 cm. The lock core is made of copper and installed in the central part of the lock body. This lock is connected to an iron chain with a thickness of about 6 mm at one end of the plane of the lock body. The whole iron chain is wrapped by plastic hose, and the length of the chain is about one foot eight inches. The other end of the chain is connected with a steel lock stud head. There is a circular groove around the lock cylinder head. There is a round hole on the plane at the other end of the lock body, that is, the lock column hole, which just fits the lock column head. There is a lock pin connected with the lock core in the round hole.