F1.round diameter 3.5mm
F2.round diameter  4mm
F3..round diameter 5mm
F4.round diameter 6mm
F5.round diameter 7mm
F6.round diameter 8mm
F7.round diameter 9mm
F8.round diameter 10mm
F9.round diameter 11mm
F10.round diameter 12mm
 
10 size  for choose one size， if no choose will be random delivery one size，pls understand
Material: Alloy (hollow)
Product total length about 13CM 17.5CM effective distance. . Dimensions: round about 13CM， flat head about 4.5CM， round diameter 4MM-12MM 4MM-7MM small size， suitable for novice friends
8MM-12MM larger size for veteran players
when order leave a mask for choose，if no choose will random delivery
Bullet-shaped round， smooth metal surface， professional medical device production， various conditions are met， you experience the excitement of safety thoughts inserted into the urethra.
Round at the bending angle is relatively small， more conducive inserted into the urethra.

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