Kit Includes: Safe-Skeg, Mounting Hardware, Instructions, Allen Wrench and Loctite 262 Brilliantly Polished with a Seamless Design Contains a Drain Hole to Protect Against Corrosion and Freeze-Up For: Yamaha Outboard – 115-130 HP, 2-Stroke from Years 2003 through Present AND 115-130 HP, 4-Stroke from Years 2000 through Present Material Thickness: 1.5mm (50% Thicker than the Competition) All Sierra parts qualify for and are covered under Sierra's Industry Leading Customer Satisfaction Warranty