Here’s something you don’t see everyday. This is a combination D and B bender developed by Paul McEwen at pulltonedevices.com. The 1/2 inch thick aluminum assembly attaches to the back of the guitar using the neck mounting screws. Installation was remarkably easy. The only problem I encountered was it initially wouldn’t pull the B a full step. Using a little common sense and vague memories from geometry class I managed to move the pivot point for the pull arm to allow a slightly longer pull. The B is pulled with the strap button lever and the D lever is activated by pulling the guitar against the players body.