Yes, it is the outer nut. On ESP straplocks there is no screw on the side of the nut unlike Shaller's S-Locks. As it is written in the description, they use so called "Perfect lock bolt" system, where two nuts have different thread lead angles and form a mechanical lock between them.
Maybe I...
Hi guys!
I've recently bought ESP E-II Horizon NT HS, and it came with ESP ESL-01 strap locks.
When I was studying them I tightened the knurled nut without a strap, and now I can't loosen it back to put an actual strap in them.
Maybe this is stupid question, but these are my first strap...
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