Trimmer Head For Homelite UT-15039-C/D/E,UT-15102,ST185C UT-15041/B,ST2517CR

ST2517CR (UT-20817). ST2517CR (UT-20823). ST2517CR (UT-20726R). ST185C (UT-15041). ST185C (UT-15041-B). 1 x Bump Knob with Left Hand Thread (Red). 1 x Bump Knob With Right Hand Thread (Black). Manufacturers part number (OEM) used for identification purposes only.