These nifty adjustable turnbuckles are the very ones that Howe uses on their TA2, Thunder Series and V8TC road race cars. The real deal, not decorative tuner junk. They’
re just the thing if you're building your own adjustable rear spoiler or front splitter. Threads are 1/4″, turnbuckles are 7″ long with 2″ of threads on each end for a usable adjustment range of about 9.75″- 11.5″, depending on how you orient the mounting brackets.