Trust Sweet Iron-dee-brass ring-16mm D-bit 12.5 cm DE: Sweet iron develops in contact with (air) moisture surface grate that tastes sweet and stimulates salivation in a natural way. As a result, the horse starts to foam more and lead to a better acceptance of the bit. EN: Sweet Iton develops surface rust through contact with (air) humidity, this rust is sweet in taste and naturally stimulates the salvia production. As it will cause the horse te salivate more, it encourage a better acceptane of the bit.