The Mountain Rear Derailleur Protector by Hikeep is a black aluminum alloy frame specifically designed to provide protection for the rear derailleur of the Hikeep K6L ebike. This durable and lightweight rear protective frame is essential for maintaining the optimal performance and longevity of the rear derailleur during off-road cycling adventures. With its precise fit and reliable construction, this rear derailleur protector ensures that your bike stays in top condition, allowing you to enjoy your rides without worrying about potential damage to the rear derailleur.