Imperial Inches

Total Length 14.4"

Usable Length 12.4"

Head Circumference 8.1"

Head Diameter 2.6"

Medial Ring Circumference 8.7"

Medial Ring Diameter 2.8"

Metric CM

Total Length 36.5cm

Usable Length 31.5cm

Head Circumference 20.5cm

Head Diameter 6.5cm

Medial Ring Circumference 22cm

Medial Ring Diameter 7cm