Size: 79 x 22mm, Material: carbon steel, 100% new brand and high quality. This hand crank puller is made of high carbon steel, durable and wear resistant. time. All you need is a 5/8 or 16mm wrench or spanner; These crank pullers use you to remove the chainrings and cranks if your bike accident happens, helping you get out of trouble quickly. No, street parking must wait for assistance. Easy to install and use, tool is for removing square shaped crank arms, bottom bracket remover can be used with a 24mm socket, wrench or adjustable wrench. Product Description Description: This hand crank puller is made of high carbon steel, durable and weather resistant. These crank pullers use you to pull chainrings and cranks out if your bike accident happens, helping you get out of trouble fast . No, street parking must wait for assistance. Specifications: Size: 79 x 22mm Weight: 120.8g Material: Carbon Steel Color: As Shown Package Include: 1 x Bike Repair Tool