1. Hinges in the center. 2. Folds in width for storage. 3. six sizes available. 4. No heat stress on rungs from construction welding. 5. Side rails hold rungs in place. 6. Replaceable components - no welding required, just a wrench. FEATURES: - Ideal for loading lawn tractors with low clearance. - Extra durable tublar rungs. - Heavy duty side rails. - Durable interlocking construction eliminates welds and rivets. Free Shipping No Sales Tax Lowest Price Guaranteed