This is a Tune-O-Matic style bridge for archtop guitars, made by StewMac (StewMac). I purchased this previously and stored it unused, so it is unopened. The listing photos show an opened version of a similar bridge purchased at the same time, so the base color is slightly different. Please be aware of this. The components are as follows: * Bridge: Gotoh (Tune-O-Matic type), Chrome * Base: Rosewood Thank you. Please note that returns are not accepted after purchase.