R & D FLEXIBLE SHAFT COUPLINGS Polyurethane flange creates a flexible barrier to reduce drivetrain noise and vibration to quiet your drivetrain. ò Absorbs transmission shock load caused by the propeller and high speed gear changes. This helps to reduce and avoid costly transmission damage. ò Fail-safe design, both forward and reverse thrust is taken in compression from the steel straps, giving a durable design even in extreme conditions. TO SIZE THESE ITEMS GO TO WWW.PYIINC.COM