The product Measures 18.5 Inches from the Hole to the Front Tip. Strong and durable - injection molded of high-impact, chemically resistant polypropylene Ergonomically designed for comfort and quality Seat bumpers are "Molded-In" for extra strength and durability, never need replacing Ultra-Violet Protection Molded into each seat to prevent color fading Simple to install - only requires a screwdriver, adjustable hinges for perfect fit, corrosion proof, self-aligning hardware