Manufacturer's Description:
Track Lock Up - For use with Alpha (P9100 Series) track - Polarity oriented - Quarter-turn locking action - Tab lock to track to prevent accidental removalTrack Head Support - Steel half yoke - 358-degree horizontal rotation - Self-locking pivot for vertical head positioningTrack Head - One piece steel construction - Socket mount – two screws to prevent turning - Porcelain socket with nickel-plated brass screw shellBaffle - Furnished with phenolic black baffle - Spring clip retentionAccessories - Barn doors P9203 order P8513P9204 order P8514