The Minn Kota MKP-40 Power Prop is designed to deliver optimal power, torque, and efficiency. This prop works exclusively with QUEST Series motors. Includes prop pin, nut, and washer.• Made exclusively for QUEST Series motors• Delivers optimal power, maximum torque, and efficiency• Fits 4-1/2" QUEST Series lower units• For use with a 1" x 3/16" Prop/Drive Pin• Prop nut thread 3/8"-24 Includes prop pin, nut, & washer