The halyard stoppers must withstand a pull of hundreds of kilograms, and the tackle moving inside must be maintained so that its shell does not break and the core slides in the clamp.
Different manufacturers, for example Antal, Lewmar, Easylock, Spinlock or Rutgerson, use different methods to fix the tackle. In some models, it is compressed by V-shaped, serrated clamps, in others, perforated plates located one after the other are used, which skew relative to each other and thus clamp the tackle. In the variant below, the halyard is secured with slightly rounded toothed ridges.
1) closed case / open position
2) open body half with guide roller, lever, locking comb and base plate
3) tackle diverter
4) half of the body with a support bolt and a return spring, which creates a pressure on the tackle
5) base plate for mounting on a cover with a serrated surface and a lever with a movable mating part (position - open)
6) ... and the position is closed