5-piece set. Lightweight black anodized aluminium C-extension parts, allows for fine tuning after installation is complete.

The beveled piece is for the E note. The t-shaped pieces are for Eb, D, and Db notes. Threaded for 1/4-20 bolts; user supplies their own levers and fastener hardware. Suggested hardware: black button head 8-32 machine thread screws, and a 8-32 tap for the ebony hole.