Bit Size Chart

Bit width (mm) Bit width (inches) Typical horse type
95-100 mm 3.74-3.94 in Small pony
105-110 mm 4.13-4.33 in Pony
115-120 mm 4.53-4.72 in Cob
125-135 mm 4.92-5.31 in Horse (Full)
140-150 mm 5.51-5.91 in Large horse / Warmblood
155-175 mm 6.10-6.89 in Draft horse / Extra-large horse

Measure your horse's mouth with soft string and add 0.5 cm to 1 cm.

For fitting advice, read our Bit Sizing Guide.