QUEST Series Exclusive: Designed exclusively for QUEST Series motors for maximum torque and efficiency in all conditions Optimal Power Delivery: Delivers optimal power and torque for reliable performance in open water and heavy cover 4-1/2" QUEST Fit: Fits 4-1/2 inch QUEST Series lower units for perfect fit and proper blade clearance Heavy-Duty Construction: Made from durable materials to withstand demands of heavy use and harsh fishing conditions Complete Installation: Includes prop pin, nut, and washer for complete installation without need for additional hardware