Bit too big - which size should I choose?

Hello! Bit sizes really can be tricky. Yes, the bit is too big, at least one size and probably two sizes too big. It is easier to judge the size, though, when the bit can rest completely freely in the mouth (so look at it without the noseband too, as the noseband can push the bit up). It also depends on how it sits on the other side. With fixed-ring bits you can generally go down one extra size compared with loose rings. So I think 10.5 with fixed rings could work well.

You also need to make sure the bit lies completely straight in the mouth. Take hold of the bit rings on both sides and pull each one outwards, so that the bit straightens out. There is probably uneven weight in the mouth, which may be why it sticks out by different amounts on each side.

When was the horse's last dental check? One possible reason the bit lies crooked is that the horse is deliberately holding it that way because of an injury or a dental problem on one side. It would be wise to have the mouth checked in the near future, just to make sure everything is as it should be. Problems in the mouth can come on quickly. It is also hard to judge size from a photo alone. A vet who is good with teeth can also help you find the right size.

My first impression is also that the bit looks like it is sitting a little too high, which can also be affected by the noseband. It may equally be that the length is misleading you. A simple way to check it is not too close to the cheek teeth is to make sure there are at least two fingers' width between the first cheek tooth and the bit.

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