Cavision SGP535R 5-Section Mixed Fiber Boom Pole with Removable Top ۲٫۹۲ to 11.48′ (0.89 to 3.5m) Mixed Fiber Construction Removable Top Top with 3/8″ Stud ۵ Telescoping Sections Concentric Locking Collars ۱۱ تیر ۱۳۹۳ afsar