Material: MetalSize: 50 millimeter socket with a 1/2-inch drive breaker bar.WHY IS THIS TOOL NECESSARY For easy removal and installation of crank pulley bolts on most Honda and Acura engines.HOW TO USE THIS TOOL - Used with a breaker bar or 1/4 inch ratchet 2 inch. This tool prevents rotation of the harmonic damper pulley during removal and adjustment of the end torque specification on the pulley bolt.WHAT MATERIAL IS THE TOOL MADE OF - Made of steel chrome-molybdenum hardened to serve the purpose. This professional grade 50mm socket (with an offset design) is for; remove/install many Acura and Honda engine crank bolts. This socket is used to hold the position of the harmonic damper pulley while removing/installing the pulley bolt. It allows users to easily loosen or tighten the crank pulley bolt in most Honda or Acura engines. Features: - The color black. - Material: Metal. - Size: 50mm socket with 1/1 breaker bar 2-inch. - WHY IS THIS TOOL NEEDED For easy removal and installation of crank pulley bolts on most Honda and Acura engines. - HOW TO USE THIS TOOL - Used with breaker bar or 1/2 ratchet inch. This tool prevents rotation of the harmonic damper pulley during removal and adjustment of the final torque specification on the pulley bolt. - What material is the tool from - Made of hardened chrome molybdenum steel to serve the purpose. Package including: 1 x 50mm Crankshaft Crankshaft Pulley Wrench Holder Tool for Honda and Acura Engines