Stainless Steel 2.5" Ring: The bit features rings made of stainless steel that have a diameter of 2.5 inches. The rings are the sidepieces of the bit that attach to the bridle and serve as connection points for the reins.

5/8" Flexible Rubber: This refers to the material of the bit's mouthpiece. The mouthpiece is made of flexible rubber, which can provide a softer and more comfortable feel for the horse's mouth compared to metal. The 5/8" measurement likely indicates the thickness of the rubber material.

5-1/2" Mullen Mouth: The "mullen mouth" describes the shape of the mouthpiece. It is a straight, slightly curved mouthpiece that lacks any joints or ports. The 5-1/2" measurement refers to the width of the mouthpiece from one side to the other.

Rubber Mouthpiece: The rubber material provides a softer and gentler feel in the horse's mouth, potentially encouraging acceptance and relaxation.

Ring Size: The 2.5" rings offer a moderate amount of leverage, allowing for communication between the rider and the horse.

The core of this bit is crafted from durable stainless steel, ensuring its longevity, resistance to rust, and overall reliability. Stainless steel components include the rings or cheeks, providing a solid foundation for the bit's structure.At the heart of the bit is the flexible rubber mullen mouthpiece. Characterized by its straight and slightly curved design, the mullen mouth offers consistent and gentle pressure on the horse's mouth. The inclusion of rubber introduces a new level of comfort, as it provides a soft and yielding texture that promotes acceptance and relaxation. The rubber's flexibility accommodates the horse's natural movements, allowing for comfortable tongue mobility.