Originally Posted by sierrams1123
Your tom thumb similar bit it not recommended for much of anything, I am not as much of a hater as some of the other people are on this forum, I just do not use and have not found any benefits from a tom thumb.
If your horse works well I would recommend using a bit like this (1st picture). Sorrel horse posted a picture of this bit as well but I would not use any of the other bits she posted, they are way too harsh if your horse works well off of a bit like the tom thumb that you are using now.
If you needed a little more, I do not think you will from the info you provided, I would try the 2nd bit next.
Both, like sorrelhorse said, are forms of the Jr Cow Horse bit.
Sorrelhorse: I do not believe the Ported Roller bit (324) that you have pictures is a form of the Jr Cow Horse.
I personally have never seen anyone actually use this bit. However I have seen it marketed at reputable tack shops as a Jr. Cow Horse. It is possible the tag is wrong I suppose.