I am riding a 4 3/4" mouth mare in Fager 125mm bits. This mare is always ready to vehemently cuss me out if she ends up deciding she does not like a bit.
She does not approve of all Fager bits in my hands. The Fager tongue relief bits–NO!
Her owner, mainly a Western rider, has told me that she wants me just to ride this mare in the Fager titanium double bridle bits. Today I am changing her double bridle back to the Fager Victoria Weymouth, titanium 125mm, and the Fager Alice titanium bradoon. I tried some other Fager Weymouths with her (the Elisabeth and the Felicia) but she started getting much antsier, so I am switching back. Unfortunately Fager is no longer making the Victoria Mullen Mouth Weymouth, luckily I bought them earlier.
This mare found a 125mm Bianca titanium double jointed with a roller in the middle snaffle pretty much acceptable. The Alice titanium bradoon has the same mouthpiece (different color, same metal) and comes in 120mm, the metric 4 3/4" equivalent. Could you stand the smaller rings of the bradoon on your mare if you want to use this bit as a snaffle all by itself?
Fager does sell silicon bit guards which are VERY easy to put on, and they were very easy to take off when I realized I needed longer fingers to keep the bit guards out of the horse’s mouth when bridling. I have rather short fingers (as do my riding teachers). If you have long fingers these bit guards may work better for you.
A bit that measures a true 5" is actually 127mm wide, something to consider if the bit does not fit exactly right.
As of right now I have introduced 5 or 6 horses to titanium bits. These lesson horses “go on strike” if their normal, often identical bit, is put back in their mouth. I find with the titanium bits the horses stand my problem hands much better even if the bit is a little bit too wide, over a stainless steel or sweet iron bit that I used to use on them with no problems and which fit their mouth width exactly. Because of my MS my hands are iffy, and the horses I ride say go with the titanium bits even if they are a little bit too wide, as long as the horse likes the mouthpiece.