Installation guide for a halyard lock in a wing masts here (right click and "save as" to download)

Not just locks but custom halyards as well.  2mm wire strop and rivet grade brass talurit with 3mm dynex tails.

For those with delicate hands we can add a 4 mm braid covered bottom 1/2 of the halyard to make raising a sail even easier.  The addition of a pulley at the base of the mast makes raising a sail, a sideways or upwards pull rather then a downward push.  

Rope to wire splicing a speciality.