Back Forty Bucks design is a plastic bowling ball and can be used as a spare ball

Lane Condition: Medium oil

Known for its angularity

Large front zippered pocket

Hammer Effect Bowling Ball Select Weight:12 lbs. Back Forty Bucks design isResponsive Power Through the Mid Lane The Hammer Effect bowling ball combines a polished pearl reactive cover with an asymmetric core to create a clean front lane read and a strong move through the middle and back of the lane. It is a high performance option for experienced bowlers who want a defined motion on medium to heavy oil. Its HK22 Cohesion Pearl coverstock is designed to clear the front part of the lane before responding strongly to friction.