Superior German-made motorcycle chain as used and recommended for all MEY mowers. Pre-stretched; excellent wear resistance; top-of-the-range length tolerance and fatigue strength; high consistency. For best results use chain lube rather than oil or grease for lubrication. This is the shorter drive chain sometimes found on MEY mowers. Check by counting the links. This chain has only 21 links. Chain link (joiner) MM017 not included.