Description: Bicycle crankset crank arm puller remover removal tool. Tools to remove the crank arms off the bottom bracket. Removable head allows to fit all ISIS or Tapered type. The thread of this tool is very tough, so it will NOT damage the thread of cranks. Practical necessary tool for outdoor biking, easy to use. Specification: Material: 45# Carbon Steel Length?approx.78mm / 3.1inch Color: Black Package Includes: 1 Piece Bike Crank Remover