The Mikmar Pony size mouthpiece is available in 4.75”. It fits a wide variety of pony types. Due to the shape and function of the bit a pony that normally fits in a 4.5” or 5” will use the Mikmar 4.75” pony size bit with out any loss of effectiveness of the bit. The pony cheek pieces are appropriate for all ponies with the exception of very small types such as Shetlands.