Reliable material: This crank puller is made of high quality metal and is a very durable and high performance racing bottom bracket. The combination of high quality stainless steel and plastic ensures a long service life. Easy to use: Easy to install and use. This tool is used to remove square cranks. The bottom bracket puller can be used with 16mm sockets, wrenches or adjustable wrenches. Versatile use: If you have a bicycle accident on the road, the crank puller that helps you remove the pinion and crank will help you get out of the jam quickly. You don't have to wait for a parking space on the side of the road to get help. Easy to install: Easy to install and use. This tool is used to remove square cranks. The bottom bracket puller can be used with 16mm sockets, wrenches or adjustable wrenches. Convenient and fast, helps you quickly solve problems, extend the ejector, detachable gear and crank. Note: The data is all measured manually, please allow 1-3 cm error due to differences in