Prime Line 7-05228 9-in-1 Pocket Wrench Includes Screwdriver, T27 Torx, 4mm Allen Wrench, Small Screwdriver, Bar Grove Cleaner and a 13mm Socket Other End Includes a 19mm Deep Socket For Spark Plugs and Nut on Stihl Saws and Can Be Reversed to a 16mm Socket To Be Used with Chainsaws