TAP-N-GO Trimmer Head Heavy-duty,tap-and-go string trimmer head. TAP-N-GO Trimmer HeadHeavy-duty,tap-and-go string trimmer head. A metal insert in the nylon tap knob extends the head's life by reducing wear and abrasion to the nylon.The tap knob also has a "stay-on"spring, so users never have to crawl around in the grass looking for a spring that popped out. Two split spools make refilling easy ...
