High Quality This bike crank puller is made of carbon steel, which is harder and durable. The thread of this tool is very tough, so it will not damage the thread of cranks and lasting for a long time to use Removable HeadThis bike crank puller has a dual function removable head ensures that it will fit any type. And it is easy to install and operate Widely ApplyRemovable head allows to fit all ISIS or tapered type, ensuring a wide ranges of application Easy to CarryWith suitable size and weight, the bicycle crank puller will not take you much sapce, so it is very convient for you to store or take it outside. Professional ToolsThis bicycle crank extractor is used to remove the crank arms off the bottom bracket, all you need is either a 5/8 or 16mm spanner or just an adjustable spanner.