Trust Sweet Iron Pony Full Cheek Elliptical BitThe TRUST Pony Collection. An anatomically shaped bit with a perfect fit for a ponys mouth. In collaboration with pony riders, TRUST equestrian developed the pony series with new sizes, thinner mouthpieces, and smaller cheekpieces. The bits are made in sizes 10. 5 and 11. 5. 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 surface rust tastes sweet and