How to Measure Dick Diameter for Metal Cock Rings

How to Measure Dick Diameter for Metal Cock Rings 

You'll need to get your calculator out if you want to level up to rigid materials like metal, acrylic, or glass. Begin by wrapping a string around your penis, then measure the length of the string on a ruler to find the circumference. Because cock rings are sold by diameter, you must divide that measurement by 3.14, and voila!

If you use a penis ring made from a rigid material like metal, make sure you slip it down to the base of the shaft while the penis is flaccid (not erect). Stretchy materials like silicone can be placed over the penis at any stage.