Headrest DVD Players

How to Measure Post Diameter

One of the top questions we get from customers before buying from OnFair is how to measure the post diameter to know which metal VERSA headrest DVD player posts size is correct for your vehicle? We know this is a tad difficult to do with total accuracy using a tape measure so here's our little gem of a tip to help you out. We hope you love it!

It's already been determined that 99% of the vehicles on the market have a headrest post diameter of: 10mm, 12mm, 12.7mm or 14mm. Knowing this helps narrow things down a ton.

All Autotain headrest DVD player packages come standard with the 10mm metal posts included. This is because 10mm is the diameter the majority of vehicles use. However, it's still a very good idea to measure your headrest posts real quick before ordering.


Here's the easiest way to measure your headrest post diameter. Use open ended wrenches. Grab your 10mm, 12mm and 14mm metric wrenches and then grab your 1/2" standard wrench. Why 1/2"? Because 1/2" is the same as 12.7mm....bet you didn't know that!!!

How to Measure Post Diameter Photo

Find which wrench your current headrest posts fit snug inside and there you have it, you now know your headrest post diameter, write it down. If you're post diameter is 10mm, no worries, you'll get the metal posts you desire with any and all Autotain headrest package from OnFair.


What happens if you have 12mm, 12.7mm or 14mm posts but forgot or didn't add them to your order? Well, no worries again. We've got you covered. To keep things simple, we've also included the plastic post sleeve adapters with every package. This way you can use the plastic post sleeve adapters right away and if wish to order the larger size metal posts later on, you can do so. But getting the larger metal posts is not necessary if you're happy with the plastic sleeves. It's your call.

Here's the link to order metal posts for your headrest DVD players