This is the QCSM4 Elevator Mid span Pivot Bushing mentioned in the Q2 and Q-200 plans. This is a brass bushing that cushions the mid span elevator pivot pin.
Richard Kaczmarek from FLAPS (Fast Little AirPlanes) uses industry standard NDT (Non-Destructive Testing) to ensure no defects in all the metal parts they supply. They are built to the precise dimensions shown on the Metal Parts Drawings for sale here on the QBA website.
Lead time is approximately 10 days.
Price is $10 U.S. per piece.