1. Good Stability: Our stationary keel roller ensures maximum boat protection with its high friction and stable design. The 4-inch diameter black rubber roller effectively reduces wear and tear on the boat's underside. 2. Corrosion Resistance: This stationary keel roller features a hot-dip galvanized coating, providing excellent corrosion resistance for prolonged outdoor use without rusting. 3. Smooth Design: Enhance your boating experience with our stationary keel roller, built for long-lasting durability and outdoor performance. Provides a clean, sleek look for your vessel. 4. Easy Installation: Designed for boat trailer tongues or frames, the bracket can be securely bolted to a 2-inch trailer tongue frame, ensuring a stable fit and smooth operation. 5. Wide Compatibility: The brackets 3-inch spaced mounting holes offer flexibility and stability during installation, allowing for easy mounting on various trailers. The stationary keel roller bracket is a must-have for any boat owner. Helps reduce wear and tear on the bottom of your boat. Item Type: Keel Roller Bracket Fitment: Compatible with 2-inch and 3-inch trailer tongue frames Color: As Shown Material: Rubber Package Contents: 1 x Stationary Keel Roller Note: Light reflection and different displays may cause the color of the item in the picture to appear slightly different from the actual product. Measurement may vary by +/- 1-3 cm.