Minn Kota MKP-40 Prop Power - Designed to deliver optimal power, torque and efficiency. Designed to work exclusively with QUEST Series motors. Includes prop pin, nut and washer. Power Prop made exclusively for QUEST Series motors is designed for maximum torque and efficiency. Designed to deliver optimal power, torque and efficiency. Fits 4-1/2in QUEST Series Lower Units For Use With 1in x 3/16in Prop/Drive Pin Prop Nut Thread 3/8in-24