NATHE Standard Snaffle Bit with Fixed Side Rings - Flexible Mullen MouthFlexible mouthpiece Big rings do not pivot to the outside, which assists in riding the turns The small rings fix the big rings, limiting sliding of the mouthpiece and direct effect on the tongue Lies steady in the mouth Suitable for horses that tend to have issues with taking up the contact Bit guards protect the lips Steel Core Available in 4 3 4", 5 1 8", and 5 1 2" Specifications: Thickness (20mm) and Ring (70mm)