Zilco Dexter Snaffle with Tongue Control 5"Stainless steel with tongue control plate which prevents the horse from getting it's tongue over the bit. Used mainly in flat racing for horses that lug. The large ring encircles the lower jaw to give the rider more control. This improved model includes a centre ring for a more direct action. Cob Size (12. 5cm 5") Mouth Thickness 12mm Ring Size 45mm