This is an awesome, heavy duty, beautifully made piece. Sustain is great, sound is great- strings don't break, and even if you use it with a vibrato the guitar stays in tune, within reason, of course. This has an 74mm post spacing and uses the fatter studs commonly found on "Import" style guitars.
These are expensive pieces normally- but I'm bringing this to you at a killer price.
This is a complete kit- studs, posts.
Insert Diameter 11.5 mm
Insert Height 19.5 mm
Thread Height 18.5 mm
Thread Pitch M8 X 1.25
Post Height 8.5 mm
Post Diameter 6.1 mm
Comes in Black, Chrome and Gold