1. Good Stability: Our stationary keel roller ensures maximum boat protection with its high friction and stable design. The 4-inch diameter black rubber spool effectively reduces wear and tear on the boat's underside. 2. Erosion Resistance: This stationary keel roller features a hot-dip galvanized coating, providing excellent resistance to corrosion for prolonged outdoor use without rusting. 3. Smooth Appearance: Designed for long-lasting durability and outdoor performance, this stationary keel roller offers a clean and sleek look for your vessel. 4. Easy to Install: The bracket can be securely bolted to a 2-inch trailer tongue frame, ensuring a stable fit and smooth operation of the stationary keel roller. 5. Extensive Suitability: With 3-inch spaced mounting holes, the bracket provides optimal flexibility and stability, allowing for easy installation on various trailers. The stationary keel roller bracket is a must-have for any boat owner, helping to reduce wear and tear on the bottom of your boat. Item type: Keel roller bracket Applicable type: For 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 display settings may cause slight variations in color between the image and the actual item. Measurement may vary by +/- 1-3 cm.