Bevel Bit Jointed Mouth
Loose ring bevel allows a mild lever action with a snaffle mouth.
The rings are larger on the 5 and 5.5 to keep the bit in proportion for larger horses.
These are also known as "Wilkie" bits or loop ring bit.
They are great where a snaffle is just not enough but a 2 or 3 ring gag is too much.
They are very popular in the show Ring.
The reins can be used in the loop or just as a snaffle.