CUSTOM DESIGNED – for Hydra Alien COMPATIBLE – with any 150mm Bowl Base Tripod Head HEIGHT OPTIONS – for Achieving the Perfect Shot SECURE CONNECTION – to Hydra Alien via Heavy Duty Washer STURDY – Steel and Aluminum Construction – Color: Black – Materials: Aluminum-alloy, stainless steel Packing list 1. Hydra Alien 150mm Ball Head Riser x 1
