Amazon.com : Manfrotto 420B 3- Section Combi- Boom Stand with Sand Bag - Replaces 3397,3397B (Black),4.7 x 4.3 x 46.5 inches : Photographic Lighting Booms And Stands : Electronics
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Manfrotto 420NSB Convertible Boom Stand - 12.8' for sale online | eBay