Solas Concord Impeller - SRZ Series - Pitch 15/21 SRZ-CD-15/21 With features like a large blade area and a unique geometric blade design, the Solas Concord Impeller delivers remarkable thrust and extraordinary efficiency. As four stroketechnology becomes mainstream in the PWC world, the Concord design truly enhances the engine characteristics, not only delivering incredible acceleration but excellent top endperformance. From water skiing to high speed cruising, this technologically advanced power torque design with its radial leading.edge will offer everything you could ask for in an impeller. Engine Type is suggested for reference only. For more detailed information check with your dealer.