Steel Alloy made Piston Pin is ideal for single cylinder engine applications. The Piston Pin is made of quality grade is steel alloy which ensures optimum durability along with long lasting trouble free service. The Piston Pin has hardness between 55 to 65 HRC. Steel Alloy made Piston Pin is case hardened for high wear resistance surface, coupled with tough cores to resist shock loads and strength to give larger service life.