This truck locks by a key, it is in excellent shape. This is very easy to install and uninstall. The base secures to the bike (3 bolts), and then the trunk's rear snaps into the cutout of the base and secures with the handle screw which is shown in inside the trunk in the picture. This was taken off a 2015 Zongshen CSC RX-3 Cyclone bike Please see pictures for more!