Nathe working bit 20 mm flexible, with copper centre piece - 20 mm - 70 mm ring mouth friendly - the copper centre piece promotes acceptance in the horses mouth and stimulates saliva- improved chewing activity of the horses steady and even pressure on the entire tongue bit discs protect jaw angles The advantages at a glance - made of high-quality thermoplastic for satisfaction. and readiness for performance. Sensitive and mouth-sensitive horses, excellent compatibility, anti-allergenic, food-safe, free from plasticisers and solvents, smooth surface, no eraser effect, temperature-neutral, good cold flexibility, dimensionally stable, high mechanical strength safety thanks to steel core in standard teeth (except size 110 mm), rings and side panels made of high-quality stainless steel, made in Germany.