The Goostree Double Gag Short Shank Bit by Dr. Bristol is designed with speed in mind, providing the control needed to race at the barrel and lift the shoulder around turns. 

Short in the shank, this bit offers the full gag effect without the severity of a traditional gag bit. A three-piece mouth completed with twisted wire on either side of a dogbone applies specific pressure points across the lips, bars, and tongue when the mouthpiece is engaged, while the center Bristol link applies moderate pressure to the center of the tongue and gives the bit some flexibility while maintaining control. The design encourages natural flexion and rate approaching turns and offers optimal flex and control with enough finesse for light-mouthed horses. 

This mouthpiece also features the sliding "gag" mechanism, allowing the horse to respond first to the poll pressure provided by the leverage of the shank tipping the purchase forward before the mouthpiece is fully engaged and applies pressure on the tongue and mouth.