Regardless of clearance, or if it's the front or rear, Deluxe scissor jacks are designed to mount on any RV. With a easy operating handle for quick raising and extendability from 4"to 30", Deluxe scissor jacks are perfect for leveling. Features black rust coating, zinc-plated handle to ensure your deluxe scissor jack a long life. The tooth gear designed scissor arms engage to ensure straight line vertical extension and retraction. Lifts up to 5000 lbs. Comes 2 per box.