This is the +0.4kg buoyancy Foam Float Arm from Hyperion. The ultra-high density foam and anodised marine grade aluminium make this a lasting option for your camera set-up. It features Ball Joint/ YS Connector Ends.
The diameter of the +0.4kg float arm is 5.5cm. It is 30cm long (the foam is 22cm) and has a weight of 400g. This float arm comes accompanied by a net carry bag for easy storage and transportation.