Ok so I know someone that used this bit, "because their horse wouldn't stop" I never got them to understand that they needed to retrain the horse. I never understood this bit.
The Stop n Turn bit:
"I don't even know what this bit is called: "wow !!!
"For those of you who hate TTB, how do you like THEM shanks???"
So when I was young and teaching my self to ride (this is why its important to get help when you are starting out) I was having trouble getting my horse to stop, I went to a "tack shop" and stood and looked at the bit all until a guy that worked there came up to "help" I told him my problem with my horse and he sold me this bit I took it home put it on my horse and STILL had trouble getting him to stop. Long story short. I went away for the summer to work at a summer camp working with horses. Came home at the end of the summer and this and my old bridle was hanging on the wall. Both were missing the curb strap . Went out bought two curb straps and surprise surprise my horse didn't have a stopping problem. The moral be careful how you take tack advice from. And when you are a beginner get help.
Lol I remember I was teaching my little neighbor about different bits and how they work, and I was putting them on my horse and saying "this is how you use this bit" and such... and I found a TTB in my barn and I half considered just leaving it in there, but I wanted to show her the effects of it. So I put it on my horse and she immediately stuck her head straight in the air. My little neighbor was so confused, she said "Are you pulling on the reins?? How come her head is so high?" I had the reins dropped on the horse's neck, I wasn't even touching them and the horse was reacting that bad.