ITEM NAME:Choke Lever Knob for Stihl FS120 FS200 FS250 FS300 FS350 4128 *5 PCS Descriptio n Description:.Fit: for STIHL FS120 FS200 FS250 FS300 FS350 4128. Damper knob switch 5. We want to make sure you are happy with our item. Goods without RMA number will NOT be accepted. We'd like to settle any problem in a friendly manner.