Invincible Marine Prop Wrench for 1-1/16-Inch Prop Nuts Made using the highest quality components Performance and quality tested The most trusted name in marine accessories and equipment Wrench fits 1-1/16-inch propeller nuts This lightweight, yet durable molded polymer wrench Engineered to fit Mercury engines over 50 HP and OMC engines over 40 HP Perfect for onboard propeller maintenance, while at sea Comes with a 1-year warranty