Researchers from the University of California Los Angeles and University of New Mexico have used 3D printing to find the most desirable penis size.

To conduct their test, Dr. Nicole Prause and her team made 100 possible dimensions for an erect penis in blue plastic to eliminate any racial bias. They then whittled it down to the 33 which they presented to test subjects.

The lady testers were then asked to pick their fave penis from a basket full of blue samples for a lifetime mate and a one-night stand.

As it turns out, the biggest penis lost out.

The testers decided the ideal length of 6.3 inches and an ideal circumference of 4.8 inches was perfect for a long-term mate.

The one-night stander’s ultimate penis size was just a bit bigger, at 6.4 inches long and 5 inches around.

Dr. Prause and her team also made all 33 of the sample penises available only for anyone who wants to run the test for themselves.

Photo Credit: Different Penis models via Thingiverse