Megaware Keelguard Inc. Megaware Keelguard 27021 Skegguard Mercruiser Alpha 1 Brand: Megaware Keel guard Part Number: 27021 Mirror Polished Marine Grade 316 Stainless Steel Thickened Lower Wear Tab Protects Against Ramp Dragging and is Great for River Running Do-It-Yourself Install in Less than 10 Minutes