The Dolmar 672191D933 is a genuine 2-line Tap & Go trimmer head, an essential replacement part for Dolmar and Makita brush cutters and string trimmers. This durable head features an M10x1.25LH left-hand thread for secure attachment and allows for quick line advancement by simply tapping it on the ground. It ensures continuous and efficient operation for professional landscaping and agricultural tasks, fitting a range of models including Dolmar MS-245.4, MS-270, MS-340, MS-4010, MS-4510, and Makita EM2650LH, EM2651LH, EM4350RH, EM4351UH.