Genuine STIHL trimmer head bump knob (cap) designed to work with AutoCut 5-2 style trimmer heads on select STIHL string trimmers and brushcutters. It’s the wear-part bump knob that engages the line feed mechanism during trimming operations, and is a common replacement due to wear or loss.
Fits / STIHL Models:
Compatible with a range of STIHL trimmers and electric trimmers that use the bump feed / AutoCut 5-2 head including: