Thule locks
Not the hardest lock to open,in the pic you,ll notice the 6 wafers,but the key only as five cuts
The last wafer his to lock the barrel in the housing and theres a universal key that thule make,which is just a longer blank key.
The normal key is just used to open and lock.
when replacing the barrel insert the key to open position them remove,insert universal key,to lift last wafer,jiggle and pull out.
Never leave the lock in the open position,because the barrel can be removed with a blank key,always lock up even if not used.
The lock will be stamped on the face, N001+N200.
IVE NOTICED YOU DONT NEED A SPECIAL KEY, JUST FILE A BIT OFF THE OLD KEY AT THE FIRST CUT,WORKS GREAT.
THIS MAKES THE KEY LONGER TO REACH THE LAST WAFER.