A 2.5 ring bit is a milder version of a 3 ring (pessoa) bit. With this bit a leverage can be created. The lower the reins are placed, the stronger the bit becomes. An ideal bit for horses that are very strong or hold the bit. Compared to the 2.5 ring, the eggbutt rings cannot move loosely and therefore the rein aid works more directly.

The Inno Sense Mullen is a straight bar that slightly bends forward. This mouthpiece is fabricated of synthetic material. The bit has a rigid core that makes the mullen bar not flexible but the material around it gives the bit a soft touch.