111-02-0001 6" Chainsaw Scrench - 20mm and 13 mm111020001 6" Chainsaw Scrench 20mm and 13 mm Sockets A scrench is a specialized, all in one maintenance tool for chainsaws and small engine equipment that combines a socket wrench and a screwdriver (or Allen wrench). It is essential for loosening tightening bar nuts, adjusting chain tension, and removing spark plugs. Picture(s) represent the actual item, although brands may vary. Message us with any questions regarding this item prior to purchase. It