PVC material single bladder safety buoy. Supplied 17m of orange thread “Fox” flag, available in round or torpedo. The leads pocket has to be hanged on the edge of your double bladder buoy. When you place a 2kg weight inside, the buoy rise up like a beacon for a better visibility and safety on water. This beacon mode is usefull for spotting a rock or a drift hunting area. To get back the buoy to single torpedo, just stuff the 2kg weight in the internal bladder of the buoy. Perfect for marking spots, hanging stringers, guns and any other dive gear.