This bump head knob secures the line spool and allows line to unroll. It will fit in many brands and models of handheld trimmers, gas trimmers, string timmers, and gas string trimmers, including select models of popular Troy Bilt trimmers TB70SS, TB20CS, TB50, and TB475SS. Please use the part and model numbers below to verify that this bump head will work in your Troy Bilt trimmer.
- Includes 1 bump head knob
- For many different trimmers
- Genuine MTD replacement lawn part for Troy Bilt trimmers
Fits Troy Bilt trimmers:
Part Numbers: 791-153066B, 791-153066, 791-147153