Leather FM Keepers
Aintree Leather FM Keepers (Pair)
Pair of leather keepers for use with a Fulmer (FM) bit.
One side threads onto the cheek pieces of the bridle while the other loops over the top cheek of the bit. When in place, the keepers cause the bit to act not only on the corners of the mouth, but also on the sides of the bars to exert more pressure.