Neck Harness Developer?

Has anyone tried on of those nylon head neck harnesses where you attach free weights to the end and rotate your neck to develop a thicker neck?

I love mine. I use it for extension only, I use a plate held on my forehead while lying face up on a bench for flexion.

I don’t really do much side to side at all.

Derek- has it increased your neck size?

Yes, but not anything I have hard numbers for.