Ergonomic design: The iron handle is designed according to ergonomic principles, comfortable to grip and saves hand when using. Efficient work: the chain is well connected, concave teeth for better grip, high hardness and strong hold, hard-to-remove oil filter easy to remove, even beginners can operate easily. High quality workmanship: steel chain high carbon, professional technology, the chain is not easy to break, sturdy and durable. The handle is made of cast iron, durable and wear-resistant. Adjustable chain: the length of the chain can be adjusted to meet different sizes of objects, widely applied. Used: This adjustable chain wrench fits most oil filters and hose accessories, it's a great car repair tool.