General description Easy to use, the Sollbry Pack Bicycle Crank Puller allows for effortless disassembly of the bottom bracket, making bike repair and maintenance quick and simple. Made from durable carbon steel, this crank extractor offers high hardness, ensuring protection for the bottom bracket thread. It is suitable for a wide range of bicycles, making it an ideal tool for both beginners and professional cyclists. By using this crank extractor, you can save time and money by performing repairs and maintenance independently.