Dewalt, 60V, Max* Attachment Capable String Trimmer Kit. The high-efficiency brushless motor maximizes runtime and product life while consistently providing the capacity to tackle tough overgrowth and withstand heavy-duty use. Easily convert this trimmer into other outdoor tools with universal attachment-capability that allows you to connect additional add-ons and take on more work. It has a 60V MAX* FLEXVOLT battery that powers 60V MAX* Dewalt tools and is also backwards compatible to work with 20V MAX* Dewalt tools.