Truth Saddlery - SADDLE FIT BASICS - GULLET WIDTH Tree Widths: Semi-Quarter horse bars usually have a 6 1/4" gullet, and Quarter Horse Bars usually have a 6 1/2" to 6 3/4"
How to Measure a Saddle Gullet (English & Western Saddle) – Saddles Now
Sitting Pretty Saddle Fitting - Gullet shape & size: Traditionally gullets are generally V-shaped or U-shaped. Consider which is best for your horse based on measurements and other assessments #sittingpretty #saddlefitting (Photo