This setup features a Bigsby B7 with a Callahan string-through shaft and a Callahan roller bar on the front to improve tuning stability. I've actually had this setup on a Les Paul-type guitar for about 7 years, and I think the tuning stability is quite good. The unit is mounted using a Vibramate as a base, so it can be installed and removed from your guitar without any modifications. For reference, I'll list the prices if you were to buy these items new from Soundhouse. This listing is for the vibrato unit only; the guitar itself is not included. Price reduced on 11/25. B7: ¥24,800 Vibramate: ¥11,800 Front Roller: ¥9,780 String-through Shaft: ¥9,780