The Limited Edition BK RUSH Redline. Stand out from the crowd with this limited edition high-performance break cue. The Predator BK-Rush is one of the most powerful break cues on the market, featuring BK technology’s four-piece fused construction butt that is break balanced to deliver more power with less effort, and comes paired with a REVO BK-R carbon fiber composite break shaft optimized to transfer more raw power with the accuracy of a playing shaft.