Shimano Baitrunner D Reels contain today's technology with legendarypPerformance and durability. Incorporating all of the latest technology such as the Propulsion Line Management System to S A-RB bearings, the new compact profile lineup of Baitrunners can handle nearly any live-bait application from the new small 4000 size for freshwater and inshore species to the large 12000 size for bluewater. Features include: Graphite Frame, Graphite Sideplate, Propulsion Line Management System, Varispeed Oscillation, S-Concept, Machined Aluminum Handle, Dartainium II Drag WAshers (Cross Carbon), Repairable Clicker, S A-RB (Shielded A-RB) Ball Bearings, Super Stopper Anti-Reverse, Dyna-Balance, Floating Shaft, and Fluidrive II Gearing.