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Measure circumference of penis by placing a thin and non-elastic string around the penis root.
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Divide the circumference by 3.14 to get the diameter.
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It is recommended to choose a ring smaller than the measured diameter, or similar size. (If too loose, the ring is easy to fall off, or too tight, it’s difficult to wear.)
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Tips: for example, the measured circumference is 5.5"/14cm, then the diameter of the ring is 5.5"/3.14=1.75" or 14cm/3.14=4.45cm.
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The measurement method is for reference only, not as a basis for purchase.
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Material: plastic
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Size: (cock cage) 3.74"*3.07"/9.5*7.8cm; top line distance 2.76"/7cm; inner diameter of entry 1.38"/3.5cm;
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(spacer) distance from spacers to active ring 1.57"/4cm; single thickness 0.2"/0.5cm;
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(active ring) adjustment range: minimum inner diameter 1.18"*1.61"/3*4.1cm; maximum inner diameter 1.85"*2.09"/4.7*5.3cm
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Weight (about): 3.35oz/95g
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Package list: 1* cage portion; 5* disposable plastic locks; 3* spacers; 2* keys; 1* adjustable active ring; 1* locking pin holder; 1* lock