ToklatMyler Flat Shank with Sweet Iron Ported Barrel Narrow MB 43HPStainless Steel with Polished Sweet Iron Mouthpiece7" Flat Shank5” Mouthpiece89-11445Warning: Cancer andd Reproductive Harm www.P65Warnings.ca.govStainless Steel 7" Flat Shank with Sweet Iron Ported Barrel Narrow (MB 43HP, Level 2-3) Copper Inlay. This mouthpiece is made of polished Sweet Iron which naturally oxidizes or rusts. Harmless to horses, it has a sweet taste and promotes salivation. Toklat manufactures and distributes some of the most popular branded equestrian products including Myler Bits. Toklat top-quality products support a better experience and improved performance for horse and rider.