What size penis cylinder do I need to use?

Penis Outside
Cylinder Order Size
(Tube Inside Diameter)
3.5 to 4.5"
4.75 TO 5.25"
5.5 to 6.0"
6.25 to 6.75"
7 to 7.5"
7.75 to 8.25"
8.5 to 9"

In compliance with state health laws penis enlargement cylinders are not returnable, so size them carefully. If you have sizing questions send e-mail to info@lapdist.com

Please note: All our cylinders come in quarter inch increments starting at 1 inch up to 5 inch in diameter.

To size penis cylinders measure the circumference (the distance around, or girth) of the erect penis. To do this:

  1. Wrap a piece of string loosely around your penis around the thickest part of your erect penis to measure, for some this will be the head and for others near the base.
  2. Mark where the string crosses itself.
  3. Lay the string next to a ruler to find the exact circumference. (Note - this method is much more accurate than wrapping a tape measure around the penis.) Penis cylinders are sized in US Inches
  4. Find the measurement most closely corresponding to your penis circumference in the column on the left - your ideal starting cylinder size will be in the corresponding column to the right. (Cylinder Order Size is the tube's inside diameter.)
In addition to the cylinder diameter size we need your cylinder length, standard lengths run from 8 inches and up. (Shorter lengths will be made upon request.) We suggest ordering a cylinder 2-3 inches longer than your erect length. For example, if you are 6 inches erect, an 8" or 9" cylinder length would work for you.

Two stage cylinders are sized by measuring with a string around the penis and balls (near where you would wear a penis restriction ring.) Use this measurement with the chart to determine the first stage size, the second stage should be 1" - 1 1/2" larger. Two stage penis and ball cylinders are generally ordered in 10".

Plastic materials may vary in diameter up to one tenth of an inch. This does not affect fit of the cylinder.

European / Asian Users - Select this link for a metric conversion chart. All prices are quoted in US Dollars - See currency conversion for current exchange rates.