About this item [High Quality] The chain hooks are made of quality stainless steel material, high strength, sturdy and . [Practical Tools] The chain hooks are very useful for connecting chains. A good tool to hold the chain in place when changing the chain. [Fit for] The chain hooks are suitable for single speed and 6-10 speed chains. [Easy to Use] Hook both ends of the chain, cut the chain easily and conveniently. [Widely Used] Available for mountain bike, road bike.