Reinsman argentine 3/8" twisted sweet & sour single joint bit. 6" cheeks with 5" mouth. 
 
"A highly versatile and pupular bit, it is a good transition to introduce curb pressure. It's a great everyday riding bit with its average shank length. The combination of copper and sweet iron mouthpiece is very appealing to the horse with the added bonus of increased salivation- making for a softer mouth."