The DEWALT DCST972 Li-Ion FLEXVOLT 60V Trimmer upper shaft assembly is a high-quality replacement part designed specifically for the DCST972 model. This OEM part is compatible with the 60-volt battery power source, ensuring reliable performance for your trimmer. With a straight shaft design, this assembly is an essential component for maintaining the functionality of your DEWALT trimmer, allowing you to continue maintaining your lawn with ease.