STIHL Genuine 4mm Hexagonal Tuning Screwdriver fits many models #5910 890 2307

Here we have a Genuine STIHL Tuning Screwdriver that is the 4mm Female Hexagon.
A much needed tool for tuning your Brushcutter, Polesaw, Backpack Blower etc.
Here if you need one anyways...
 
fits the following units: HT 100, 101, 102, 103, 105, 130, 131, 132, 134, 135,FS 90-Z & RZ - 4180, 91, 91R, 100RX, 110, 110R, 110RX, 111, 111R, 111RX, 130R, 131, 130, 131R, 240, 240R, 311, 360 C-E, 360 C-EM, 161C-EM, 460C-EM, 461C-EM, 
FB 131, FC 90, 95, 96, 110, 100, HL 90K, 91K, 94, 94K, 100, 100K, KM 90 R, 91R, 110R, 111R, 130R, 131R, BT130, 131, BR500, 550, 600, 700, 700X, 800 C-E Magnum, 800X Magnum.
 
Note: This tool will NOT fit the BG56* BG56C *BG86*BG86C carburettors.