I replaced the Mission tires and had this style
"Clamp in" valve stem installed. They come in three lengths 3/4 inch, 1 1/4 inch, and 1 3/4 inch. Not knowing I got the 1 3/4 inch which is probably too long. If I did it again I would go with the 1 1/4 inch. I like these because I feel they will support a tire monitor cap better.