Black and Decker 682378-02 Bump Cap for Black and Decker Grass Trimmer models 51312 TYPE 1, 82300 TYPE 2, 82300 TYPE 3, 82300 TYPE 4, 82310-04 TYPE 1, 82310-04 TYPE 2, 82310 TYPE 1, 82310 TYPE 2, 82312-04 TYPE 1, 82312 TYPE 1, 82312 TYPE 2, 82312 TYPE 3, GE600-04 TYPE 1, GE600-04 TYPE 2, GE600-04 TYPE 3, GE600 TYPE 1, GE600 TYPE 2, GE600 TYPE 3, ST1000 TYPE 1, ST100 TYPE 1, ST100 TYPE 2, ST200 TYPE 1, ST200 TYPE 2, ST300-04 TYPE 1, ST300-04 TYPE 2, ST3000 TYPE 1, ST300 TYPE 1, ST300 TYPE 2, ST400-04 TYPE 1, ST400-04 TYPE 2, ST4000 TYPE 1, ST4000 TYPE 2, ST400 TYPE 1, ST400 TYPE 2, ST4050 TYPE 1, ST5000 TYPE 1 and ST5000 TYPE 2.(682378-00, 682378-01) Also fits DeWalt Grass Trimmer models.