All-in-one chainsaw tool! Features a large screwdriver, a T27 Torx for all bolts on a Stihl chainsaw, a small screwdriver, a 4 mm Allen Wrench for work on Echo and Husqvarna saws, a 13 mm (1/2") socket that will fit a bar nut on a half or full wrap handle Husqvarna saw, and deep sockets (19mm x 10mm and 21mm x 16mm) for the spark plug on all saws and a bar nut on a Stihl saw. Can also be used as a chainsaw file handle. Complete with a waterproof nylon sheath.