for the stock locks, use a 12point 19mm socket. try to just hammer it on enough to grip good, if you hammer it all the way on your never gonna get it outta the socket
dsm/mitsubishi service manuals https://www.mediafire.com/folder/5k14qlaulb9s1/dsm_mitsubishiservice manuals(my whole collection) https://www.mediafire.com/folder/ac51jwwa3g1n1/automotive_manuals