B1AB1012 THROW WEIGHT-12OZOne New Aftermarket Replacement Arborist Throw Weight 12 oz. by Sunbelt Outdoor Products This 12 oz. arborist throw weight (throw ball) is an essential tree work tool used to launch a throw line over a target branch or crotch in a tree. The Cordura construction features an aerodynamic design that helps to increase the range of the throw. It comes in bright colors and has a nickel plated stainless steel ring to prevent rusting. The moving action of the