15/19mm 3/8" Threaded Bars (Aluminium)
Material: Aluminium - high grade (strength)
Slightly different than your typical bars, for one the 240mm version has 2x 3/8" female threads tapped into each end, allowing them to be used with an array of accessories (eye bolts etc.) on and off camera.
All of the aluminium bars I do are also solid throughout rather than hollowed out like some. Still very lightweight but strong, then strong some more.