A gentle, stable design. The Shaped Mullen Mouth Eggbutt Bit from Happy Mouth Bits is covered with a soft, flexible, yet extremely durable, apple-scented plastic which encourages bit acceptance and a soft mouth. The shaped mullen mouthpiece has an inner core of twisted wire for more flexibility. Stainless steel rings have a shape that helps prevent the bit from sliding sideways. The design helps keep the bit stable in the horse's mouth. Nice used condition, no bites or rips in the bit. 5" mouth with 2 3/4" rings.