Stainless steel loose ring bradoon. Use with a sliding cheek weymouth or as a bit on its own. Mouth Thickness 14mm Shetland/Small Pony Size (10.5cm/4 1/4") - Ring Size 40mm Pony Size (12cm/4 3/4") - Ring Size 45mm Cob Size (13.5cm/5 1/4") - Ring Size 45mm Full Size (14.5cm/5 3/4") - Ring Size 45mm