The Macbeth Flat 57F is a shallow-running flat-sided crankbait that employs Shimano's JET BOOST lure technology to defeat the typical unstable casting performance of flat-sided crankbaits. JET BOOST technology utilizes centrifugal force to stabilize the flight posture of the MB-57F Flat and improve casting distance and accuracy without sacrificing swimming action. The MB-57F Flat features a Circuit Board round bill to produce a tight rolling action with a subtle body flick and a 3 to 5 feet diving depth. The Macbeth Flat slowly floats, allowing it to remain longer in the strike zone when fishing cold water or pressured fish.