Manfrotto 187 Adaptor Male 16mm 5/8” M10 F 5/8” stud M10 female thread

The Avenger F831TH Baby Female Swivel with Ball can convert an arm or dowel up to 16mm (5/8″) in diameter into a boom arm. It can add versatility to your non-swivelling light fixture (with optional #013) to make it more versatile. Each end has a locking Baby 16mm (5/8″) receiver. The ball joint has a pull-and-lock aluminium alloy handle with anti-rotation springs. It weighs 0.8 kg (1.76 lb).