Truthfully, I couldn't find a picture of the exact one I have. It is a curbed mouthpiece like the one above, but the rings on it don't have rein spots...it's like a D-ring...weird I know - I think it was hand made. There is like zero bite to it...the boys love it
This is Lady's but hers is in black. It's a jumping hackamore, the top rings attach where the bit would, and the side rings attach to the reins.
I just like it because it's simple and she responds to it without any fuss. Eventually I'll have to introduce a bit to her, which she has only had in a few times.
The one with the black bridle and no mouthpiece? It's a muserola (metal bar screwed onto a regular noseband with the rein-rings). Some muserolas has studs/spikes pushing down onto the mose (you'll see if you google) mine hasn't. It works like a non-jointed riding cavesson.
I guess it gives a little more controle and more obvious signals, but mostly because the rings poke out a bit from it and are unyielding to the metal bar under the noseband. It makes it easier to flex the horse and work him through his body than a regular sidepull :)
(It's Zab.. with a B.. short for ZaBina.. Why does everyone here call me ZaP? XD)
It's for lunging or working the horse from the ground, or just leading it. (great when you want someone to hold your horse when you ride, for safety, need to lunge the horse to let it buck if it has sadel tvång(''saddle angst'') or want to be lunged to find you balance etc etc etc :P