Those type locks (micro) require a bur on the hole to bite into the cable and make them lock solid, after one or MAYBE 2 uses that bur is gone and you have a lock that will never again lock down and stay there tightly. Just use them once and throw them away or use them knowing you'll likely not quickly dispatch anything with them short of in great entanglement. They are marketed as relaxing locks for this reason IMO.
Just to clarify the issue concerning micro locks. In my experience micro locks are a great lock for quick and efficient dispatches under the timbered conditions I have trapped in when the snare is constructed and set up properly.
My preferred and most efficient coyote/wolf snare:
--6 ft of 1X19 5/64 cable with end swivel for attaching +/- 6 ft extension to it.
--using a 3/32 micro lock on 5/64 loaded cable.
--50 lb compression spring
The reason for using a 3/32 micro lock on 5/64 cable is the tighter the bite (angle) the tighter the pinch. Another thing to maybe consider is that a slightly larger lock size than cable size will close faster due to less friction than with a matched cable to lock size.
In wooded areas tie off high and SOLID in most situations to a tree or something that does not bend. A solid tie allows for solid locking and tying high keeps the snare and lock high up on the back of the neck by forming an angle of about 45 degree from the animal to the snare tie/anchor point. This will make the snare set up on the neck just behind the ears where the carotid arteries are most exposed, which is the desired kill zone for a snare. Also, if the coyote pulls backwards the snare will be over top of its head and it won’t be able to chew and the snare will pull up to the base of the skull. If unable to tie high and solid, use SHORTER snare, SMALLER loop and tie off low and SOLID still providing about a 45 degree cable catch angle.
With this snare set up and method of setting I get quick dispatches with little site disturbance and little,if any, head edema. I have also occasionally had coyotes DOA at the end of the snare without entanglement.