AK Dutch Gag Multi Ring Double Jointed German Silver Bit. This multi ring offers different rein options, depending on where the reins are attached, varying degrees of lever action intensify the riders aids, by using a curb strap can limit the poll pressure and additionally acts onto the lower jaw. This double jointed helps to create more control over strong horses that evade a contact. Available in Sizes: 4.75”, 5.0”, 5.25”, 5.5”, 5.75” inches. Material: Made with High Quality German Silver, encourages salivation. Best Material for Horse Bits. Mouthpiece thickness: 16mm Main Ring Size: 65mm