Manfrotto 151 Adaptor Stud 3/8” to 1/4” 5/8” stud body

16mm female adapter.

Avenger B142 Adaptor Bushing D.50 for Strato-Safe.

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).