Herm Sprenger Satinox Eggbutt Double Jointed SnaffleThis eggbutt bit is ergonomically shaped to allow an even distribution of pressure Fits anatomically correct between tongue and palate Direct and precise effect Direct pressure transmission on the tongue and lower jaw due to the fixed rings Lies steady in the mouth and gentle on the corners of the mouth Excellent processing and tested material quality Available in 4 1 2", 5", 5 1 4" and 5 3 4" Specifications: Thickness (14mm) and O Ring (65mm)