Prime Line 7-05235 9-in-1 Pocket Wrench Includes Large Screwdriver, T27 Torx, 4mm Allen Wrench, Bar Grove Cleaner, 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