LED Halo Rings

Has anyone purchased these?

http://www.carid.com/lumen/lumen-led-halo-rings-15856330.html

I have a '12 Tacoma PreRunner - Sport Edition. Need some assistance determining the diameter to purchase.
Thanks in advance for the help!!

 

Are you running stock headlights? Halos are generally put on in headlights with projectors. If you have stock I'm not really sure where you plan on attaching those or how that would work. There are some threads showing off retrofits in this section which have halos but they are just attached to the outside of the shroud, like 80 or 90 mm or something like that. I know a few people have mounted some ~120mm halos in their retrofitted headlights.