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: Volvo Penta Inboard/Outboard – DP Drives (Dual Prop) from Years 1996 through 2007 and SX Drives (Single Prop) from Years 2007 through Present Material Thickness: 1.5mm (50% Thicker than the Competition)