2 Pack Trimmer Bump Knob Fits Stihl 4006-710-4000 FSE60 FS38 FS40 FS45 FS46 FS50

These work well for a stihl fs38 and fs41

My package was delivered in a couple days and was packaged nicely. Fit my weed eater and works well. Very happy with my purchase.

These are a decent substitute for the factory STIHL heads and more affordable.

Loved this, ordered many weed eater heads. then finally found just the bump knob here on Amazon, Amazon was so good to return the weedeater heads I could not use. Thank you Amazon for having the parts.

The bump knowb itself is great quality, however, the nut inside is not compatible with the head of the F 38 Stihl model. You will have to have the old nut that came with your weedeater to replace the nut in the new bump head or this product will not work.

The product was supposed to a replacement for the Stihl FS40C bump knob. As seen in the photo - it’s not even close. The 3/8” space to the retaining nut doesn’t allow the nut to reach the threads of the post that secures the head in place.

Fixed problem

Worked liked new, priced right for the pair, now have a spare.

Works fine with my Stihl fs38 although a bit tight.