Trust Sweet Iron Dee Ring Medium Port BitWe love the Trust Sweet Iron Dee Ring Medium Port bit because the sweet iron promotes salvation relaxing the jaw. The port reduces pressure on the tongue and is great for preventing the tongue from getting over the bit. The Dee ring keeps the bit from sliding through the mouth and pinching the cheeks. The Sweet Iron bits are made of steel and have a recognizable blue color. Sweet Iron will rust when it comes into contact with (air) humidity, the