Shires Copper Lozenge Sweet Iron Loose Ring Snaffle. The Shires Copper Lozenge Sweet Iron Loose Ring Snaffle is ideal for dry mouthed horses that may tend to lean on the hand. The snaffle is made from a combination of sweet iron that produces a sweet taste and copper inserts that encourages the horse to salivate and accept the bit. The Shires Copper Lozenge Sweet Iron Loose Ring Snaffle features a copper lozenge that sits comfortable on the horse\\\'s tongue, assists with salivation and encourages the horse to accept the bit. The double jointed mouth piece eliminates the nutcracker and palate action of a single jointed bit and instead applies pressure to the horse\\\'s tongue and bars of the mouth.