Hidora - Class Rex Kaiju Mini Small Medium Large
Total Length 5.25" 6.5" 8" 10"
Insertable Length 4.5" 5.5" 7" 8.75"
Circumference of Upper Shaft 4" 5" 6.25" 7.5"
Circumference of Lower Shaft 4.75" 5.75" 7.25" 8.5"
Diameter of Head 0.6" 0.8" 1" 1.2"
Diameter of Upper Shaft 1.3" 1.6" 2" 2.4"

Diameter at Lower Shaft

1.5" 1.8" 2.3" 2.8"