Interior (wearing) 17.5cm/6.89"
circumference (expands) 20.5cm/"
Exterior Diameter (Major Axis) 6.5cm/2.56"
Interior Diameter (Major Axis) 6cm/"
Exterior Diameter (Minor Axis) 5.8cm/2.28"
Interior Diameter (Minor Axis) 5.4cm/2.13"
Length of Setting 2.4cm/0.94"
Width of Setting 1.7cm/0.67"
Height of Setting 8.9mm/0.35"
Safety Chain Length 6.5cm/2.56"