Imperial Inches

Total Length 11.2"

Usable Length 9.4"

Head Circumference 6.9"

Head Diameter 2.1"

Medial Ring Circumference 7.1"

Medial Ring Diameter 2.5"

Metric CM

Total Length 28.5cm

Usable Length 24cm

Head Circumference 17.5cm

Head Diameter 5.25cm

Medial Ring Circumference 18cm

Medial Ring Diameter 6.25cm