Bolens 31-cc 2-Cycle 17-in Curved Shaft Gas String Trimmer in the Gas String Trimmers department at Lowes.com
2-Pack 791-153066B Bump Head Knob Assembly Replacement for Bolens BL50 41AC105G163 Electric String Trimmer - Compatible with 791-153066 Right Hand Bump Head Knob - Walmart.com