It can also be attached to a 5LFrame.
Some OEM5LMONKEY frames have holes, so you can install it, but some OEM frames don't. So you should check if there are two holes on reverse side of the neck.
If you can't install it, you can install it any way you want as shown in the picture.
Once the key is in place, there is no rattling and it fits so tightly that it is impossible to remove.

