This is a compatible part modeled after the 12-string/6-string switching mechanism found on the Rickenbacker 336/12. The original parts, manufactured in small numbers in the mid-1960s, are extremely valuable, often exceeding 1 million yen. This is a great opportunity for those considering modifying a 12-string guitar. As I do not own a 12-string guitar, the guitar body in the first photo is for reference only and is not included. The items shown in the second photo are all that are being offered. Dimensions are as shown in each photo.