Hammer Black Widow Legend Bowling Ball Hammer is calling to what it is, a legend The Black Widow Legend takes the proven history of the Black Widow line and takes it up a notch This is the first ball in this line to use a hybrid coverstock his ball is aggressive with it's polished cover and then combine it with popular Gas Mask core to provide awesome movement on the backend that carries through the pins. Recommended Lane Condition: Medium-Heavy Oil 3 year manufacturer's warranty