Bought 6 of them a few weeks ago. Just installed one on the front of the '99 on Labor Day.
Put a drop of blue Loctite on the nut, working great!

Will change them on the other Valks as the tires wear out.

BTW, I have the double nut on the inside metal stems installed on my '97 for 40K miles & over 3 years with no problems at all. I do like the concept of the outside nut style so they will go on at tire change time.