This is a set of a Bigsby B5 and a Vibramate V5. This part allows you to install a Bigsby on flat-top guitars such as SG, Firebird, Les Paul Special, and Junior without drilling any additional holes in the body. All the necessary parts for installation are included. The box is only the one for the Bigsby B5. Both the Bigsby and Vibramate have instruction manuals. If you are not confident in installing it yourself, please ask a repair shop. Please perform the modification at your own risk.